Malicious PDF — malware analysis report

Static analysis result for SHA-256 60afc6266d99b0cf…

MALICIOUS

PDF

78.8 KB Created: 2021-09-09 09:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1ddc2a28d7ba8e4f165515bae0871b45 SHA-1: 2568349c58ec1d44ab9d3cb0402a0bbf3c4e166c SHA-256: 60afc6266d99b0cfadb3d0059861178fa6c22cc60193dd037ef734e6372aab65
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure strongly suggest an attempt to lure users to potentially harmful websites, likely as part of a phishing campaign or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=old+gacha+life+apk+pc PDF link annotation
    • https://hilanguage-com-tw.triangle-design.com/files/33795202845.pdfIn PDF document text
    • http://medica-brno.com/files/suxofa.pdfIn PDF document text
    • http://fatename.com/uploads/files/202109030434366637.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/suritimesewebun.pdfIn PDF document text
    • https://onderdurdu.com/upload/ckfinder/files/18323875344.pdfIn PDF document text
    • http://techcessgroups.com/userfiles/file/fakezojezebigitemuxasawu.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/wogekexoku.pdfIn PDF document text
    • http://milkyway-vn.com/upload/files/bilevakokazopajivenuxa.pdfIn PDF document text
    • https://classoft.ro/userfiles/file/27737740277.pdfIn PDF document text
    • https://pavillonwohlen.ch/userfiles/files/38645885460.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161344d520a361---30826814713.pdfIn PDF document text
    • https://wcfkenzi.com/ckfinder/userfiles/files/jefuja.pdfIn PDF document text
    • http://www.bargiel.com.pl/ckfinder/userfiles/files/lifazenuwovepufusi.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/tq0ekbb65eccpo49rkkofvvgkd/4113060140.pdfIn PDF document text
    • http://quesnelbusinessnetwork.ca/userfiles/file/74439231580.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/polejafetuvabopaz.pdfIn PDF document text
    • http://www.pataniforum.com/admin/jquery/ckfinder/userfiles/files/susep.pdfIn PDF document text
    • https://zoorichi.com/temp/fckeditor/file/38237447404.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210908184543.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/wavekem.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_off0000d108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD108 17628 bytes
SHA-256: a4768921a245b1b8046b0e141af94b4529ce640bba62cbb927ec17e5be707755
font_01_sfnt_off0000fe96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000116ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AD 10428 bytes
SHA-256: d682f515b279ceba6058c27e963177ef03f64f90b11cf7fda3366ce64d364c5f

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