Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f84db129fe1711…

MALICIOUS

PDF

89.3 KB Created: 2021-09-23 04:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ceb4bf6828d721f40fb15be20b8a4569 SHA-1: 7953f082d19f31f5aead56c7e5470d07f9075388 SHA-256: 80f84db129fe17117030bb8248969ec1ab1c0f1c767f047b91928b606cf14294
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://philabc.ru/uplcv?utm_term=list+of+rootable+phones PDF link annotation
    • http://raylutickenterprises.com/userfiles/files/35301611633.pdfIn PDF document text
    • https://censcakmu.org/board/file/files/18342831784.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/96773181958.pdfIn PDF document text
    • http://ghettaetamionarchitetti.it/userfiles/files/jugetibefof.pdfIn PDF document text
    • http://hhoasis.org/app/webroot/img/fck/file/vedaw.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/26518953678.pdfIn PDF document text
    • http://northcity.rs/slike/files/rebesu.pdfIn PDF document text
    • https://lalicorne-hotel.com/userfiles/file/50748228657.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/50682524490.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/84524624595.pdfIn PDF document text
    • http://grotech.in/userfiles/file/genexuvedaminalutebixux.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/43007583961.pdfIn PDF document text
    • http://alde-pace.org/ckfinder/userfiles/files/gisawunenuxime.pdfIn PDF document text
    • http://audyt.rowerowaszkola.pl/imgturysta/files/gajogin.pdfIn PDF document text
    • https://hklh.vip/data/attachment/file/wixufukat.pdfIn PDF document text
    • https://bengalroys.com/ckfinder/userfiles/files/13434912689.pdfIn PDF document text
    • http://xn--q20b13r9leepaeb.net/upload/file/202109202014501166.pdfIn PDF document text
    • https://obermeyer-modemarkt.de/upload/file/tabozotenetegorasonelazem.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/11976969737.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/29134256637.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161301bda5e44d---27738591637.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/kerarefamupurudexesaribow.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/3b4be6eaa6fcfa05dccd3d30a918c183/17860991402.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA8 10552 bytes
SHA-256: 43d3ef88989ef161fd568348488c842a69833d4c920ba92d8200629f6f8a9cf5
font_01_sfnt_off0001126f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126F 17388 bytes
SHA-256: 1f14e6b8af9f253b4f133fe090353d33dea7822c7d0a8572de68141d3764ba07
font_02_sfnt_off00013ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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