Malicious PDF — malware analysis report

Static analysis result for SHA-256 96060d54e48614bb…

MALICIOUS

PDF

83.7 KB Created: 2021-09-05 02:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e81d1d4cf73aefff12097dbe99c9e1f1 SHA-1: 88cbe457b313dfc5cf1f0cde344e98e49446ecc4 SHA-256: 96060d54e48614bb97b654e04e68f33321ef4c4b6aa322717539b1681567d9b8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links pointing to various websites, many of which are hosted on compromised or disposable domains. This structure is characteristic of a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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.
  • 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 https://people11people.com/uploads/File/66490067202.pdf In PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/d0115c5861a61023a7655a31f7593516/xubasozukezazurup.pdfIn PDF document text
    • https://unosms.us/userfiles/file/24732719258.pdfIn PDF document text
    • http://tion.hu/upload/file/woxonilaxi.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923f7b2fbc3---jazelulirofuxizituxof.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/89787729583.pdfIn PDF document text
    • http://polloricowings.com/uploads/files/46412499002.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1609817255ce94---27808137484.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/sopukafatugope.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094b44c4ece4---vajepewazisiruk.pdfIn PDF document text
    • http://moffatcountyhighschool65.com/clients/878592/File/risulexogomidom.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9f0b66245---22014534243.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160758043c4e8a---samefazofewize.pdfIn PDF document text
    • https://leresto-niort.fr/images/userfiles/files/potus.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ut3gsrap1l9bhfpf4uv4nl0s23/viluv.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d543170e5---37731010402.pdfIn PDF document text
    • http://muskogeeroughers1967.com/clients/9/98/9899c641331876fb313f08ec475a0443/File/vapinesiwen.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/rigudabesejakevukapazi.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9081f545b2---35638812231.pdfIn PDF document text
    • http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/fakixewurovejefoxixedo.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/46417833485.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/55135968209.pdfIn PDF document text
    • http://kammatrans.com/userfiles/files/fuwutadew.pdfIn PDF document text
    • http://learningkey.org/userfiles/kibofopomexos.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/vonedaromovagakafu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=information+theory+and+coding+lecture+notes+pdfPDF 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_off0000e0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 11232 bytes
SHA-256: 0d661eb342cc2f4821ccd722894f4a754e94c4fdde509e49fbe84b1ea92d2c3f
font_02_sfnt_off000112b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B1 17656 bytes
SHA-256: b42967f7915d49706aec906970b0e172c591406b7baa838d5eccd8c921d1f794