Malicious PDF — malware analysis report

Static analysis result for SHA-256 582143fc327ed51a…

MALICIOUS

PDF

85.8 KB Created: 2021-07-10 05:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 095513c446ccd9e4c260084925e9a5bc SHA-1: 9eae93d772446254a359d1969d3ab61d3c0df424 SHA-256: 582143fc327ed51a8702b39ff97f1a6dbf2819b1ef6969f7ef00609d7e115058
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple heuristics indicating it is a phishing lure, specifically impersonating Netflix to trick users into downloading a "hacked version". The embedded URLs and link farm structure suggest an attempt to direct users to malicious sites. While no scripts were directly extracted, the PDF structure and heuristic firings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=hotstar+hacked+version+for+pc.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://biznesfishki.ru/files/userfiles/files/zanepuja.pdf In PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/2e8f6fc8e72454f6e2ab5676eb21ccc7/mikiratuj.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beea5594f6d---33017425896.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/58076725378.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c69b375f60b---lomudipegebapojelusudag.pdfIn PDF document text
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/fo112rr87t6uscllapjmg51vtg/29319384066.pdfIn PDF document text
    • http://ilyxrace.com/userfiles/files/57766785382.pdfIn PDF document text
    • http://englandmatchshirts.com/assets/file/xilujubejalofirijurera.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/b4e4a64a079a9ed6e030ebb7ed9eed1d/85203816847.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///20217365545556.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f6fd2c311---12613982930.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160819a7ec19d1---47405279815.pdfIn PDF document text
    • http://skyline1968.com/clients/74864/File/siwekerapepalozuxemor.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/67480900118.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/adccfqbi8iom1drbi4j3ct1343/127197678.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ef4e3b110---zibasumuzezegenag.pdfIn PDF document text
    • http://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607549adab22b---tikatew.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/77fe2c759451f128f47ec60604dc9d04/dakazuborafobawas.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/lugafasitisoxazefowib.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd698b1fe3---gosexexupajunuletalire.pdfIn PDF document text
    • http://humboldthighclassof79.com/clients/1/19/19f040aad945c40a0acbd79abd3dc6cb/File/60376128345.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/menigafalukoweru.pdfIn PDF document text
    • http://zonweringbelgie.com/ckfinder/userfiles/files/dawidejiwanomexikesepisow.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9149c24a7---14560129585.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/wijubesogexelinizuzo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=hotstar+hacked+version+for+pcPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC2 17100 bytes
SHA-256: 1879aec9c1e9988eb26eb1e12b935bc90470ba74b920593e65d371493d075033
font_01_sfnt_off00011896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11896 10820 bytes
SHA-256: 4de1bde57e09aabe0e522026feef9078c9b2a67854ecc454a4aee2144a07b766
font_02_sfnt_off0001318a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1318A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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