Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60ce7fa11ae022b…

MALICIOUS

PDF

87.4 KB Created: 2021-09-21 04:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 418818b18e250756fa65d358646897a6 SHA-1: c12877421692bb5d5487b00dfc2f8625fbe252f6 SHA-256: d60ce7fa11ae022b89cd7215088471277f3f0ddae6f9bae5856d1bf274805438
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external links, many of which point to compromised WordPress upload storage or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to manipulate search engine rankings or redirect users to malicious sites. The embedded JavaScript, while not fully analyzed due to obfuscation, is a common vector for further exploitation in PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pc-driver.ru/userfiles/files/rarumejufufale.pdf In PDF document text
    • http://tuvanthanhlapcongty.biz/upload/ck/files/89809993866.pdfIn PDF document text
    • https://playindiano1.in/ckfinder/userfiles/files/vaseguzefavusuxofijotov.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/rokedakowafo.pdfIn PDF document text
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/saxowifelimuwozoniwu.pdfIn PDF document text
    • http://ls12368.com/userfiles/file/57072890960.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/sarovo.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/32810009252.pdfIn PDF document text
    • http://www.novosib-sport.ru/ckfinder/userfiles/files/43260282291.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/rorapi.pdfIn PDF document text
    • http://megatex-plast.ru/pub/file/sifalajukuduranuv.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/2add47244634bd369e160a567f82a06d/40463038607.pdfIn PDF document text
    • https://tranhdaquyhn.com/uploads/news_file/96670672749.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16138dd7b62f36---giwobimo.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135f61f4d416---vegemetuv.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/nirodululedadan.pdfIn PDF document text
    • https://littleitalypizzany.com/nbloom/fckuploads/file/49441093991.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/figezojifivotovarasineni.pdfIn PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/54737717146.pdfIn PDF document text
    • http://elpijisystem.com/file/jinapusago.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/boqbo8t8ira8990sjq1ioa42dd/durewuruvideriwibosodatag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=website+keywords+checker+freePDF 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_off0000e9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F7 20524 bytes
SHA-256: f5080f090a3772b7dc7516f84a506b85289295ecaa7b2fd6825628a3713aee2a
font_01_sfnt_off00011f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F92 10684 bytes
SHA-256: c3670dbb70313fbaaf785913194ce685705687c5a3d5a4f6a74a3a7108ff31e6
font_02_sfnt_off0001384e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1384E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.