Malicious PDF — malware analysis report

Static analysis result for SHA-256 4477599722392c9b…

MALICIOUS

PDF

69.1 KB Created: 2021-02-13 19:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ec33190c3629b1d92b452a63f8dd83e4 SHA-1: b213cb9600ac6d8ec233b7511d32490d3c0a101a SHA-256: 4477599722392c9b3bf26f1dd5bb3d49bf0d232811bfd2320a735ce2acd6b030
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=cool+useless+facts PDF link annotation
    • https://cdn.sqhk.co/woxekivepi/pKDiggd/hoverboard_design_sketch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452834/normal_60264d0cf3c2f.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/icidThb/linazexe.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/nSjftie/rugby_world_cup_2023_draw.pdfIn PDF document text
    • https://cdn.sqhk.co/raserijene/fV6Nkjb/35194972242.pdfIn PDF document text
    • https://cdn.sqhk.co/vakusukereju/Qhjiegj/43347238510.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/eEhbja9/little_black_boy_haircuts_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_601f8f4ade190.pdfIn PDF document text
    • http://albl.ru/11519245618l7jqu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_60252d6075a82.pdfIn PDF document text
    • https://cdn.sqhk.co/sututidogo/F3qXgdz/the_legacy_2020_subtitles.pdfIn PDF document text
    • http://shtampshop.ru/tor_onion_browser_for_androidpizdv.pdfIn PDF document text
    • http://detonic-buy.website/26299550523iih12.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/jacob_s_ladder_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/15488824965.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/gevokemifunased.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD460 4684 bytes
SHA-256: 6c1e98b06a8921f6a6bd19085e0dc4d3cfec4bf7958c06e4d4fbda3cff8fd66a
font_01_sfnt_off0000e461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE461 10416 bytes
SHA-256: 71ba296d43b0189daaf9ef887c5ce42bc99e401956eec0b6b7c36cedf7ee670f