Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6141b1ea46e9b6…

MALICIOUS

PDF

75.5 KB Created: 2021-02-27 05:26:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4874679f9685942141208606dce5b014 SHA-1: 8d484c122e924faceb47a3082f36f55cb4064558 SHA-256: db6141b1ea46e9b62709d9497685abcf31bd1e9efa0fcec868982698824a5b9d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fokemale.ru/award?keyword=kindle+fire+hd+7+3rd+generation+cyanogenmod PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484097/normal_5ff755aca3202.pdfIn PDF document text
    • https://mipafalubered.weebly.com/uploads/1/3/4/0/134017716/79096344.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483587/normal_5ff3d32996755.pdfIn PDF document text
    • http://topcreditreport.info/navy_e5_eval_closing_bullets3cikf.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/bifSbhd/is_izombie_coming_back_for_another_season_5.pdfIn PDF document text
    • https://tefovaxosu.weebly.com/uploads/1/3/1/1/131163863/4f657d68e925786.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/figiiig/kuluxovutovir.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/bjeijq9/16199406781.pdfIn PDF document text
    • https://malegudupo.weebly.com/uploads/1/3/0/8/130813961/58741a.pdfIn PDF document text
    • http://organize.shop/javusosud3jhk.pdfIn PDF document text
    • http://hushseo.online/16747273196dufhg.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jdcOhif/animal_crossing_pocket_camp_villager_list_gulliver.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/BUiENig/59381978796.pdfIn PDF document text
    • https://cdn.sqhk.co/merojuniv/i6hOids/41139605922.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josatagosovux.rf.gd/32361188549.pdfIn PDF document text
    • http://gapisoga.rf.gd/2175945541.pdfIn PDF document text
    • http://zumidid.rf.gd/92384793047.pdfIn PDF document text
    • http://gixosuwali.rf.gd/mikavusugufazinaxogakuvez.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_off0000e95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95C 5572 bytes
SHA-256: 9ffffa709b628f4b3600a4e77a93107d77a079e910fea9402a6a96d6726efe68
font_01_sfnt_off0000fc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC46 10616 bytes
SHA-256: 233f8e30735785b287df2a974df898c49281d2b73146d6e1a29cbf23457f9a88

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