Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbe57367ae516d8…

MALICIOUS

PDF

68.8 KB Created: 2021-02-11 20:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a9aea4ab42a8d1395f450849fc2894a7 SHA-1: 73d52a42f02ec626c6d91d8433ef88ef540c567f SHA-256: 2bbe57367ae516d824530507f113d7475fa39ba0d1487ebd9138f7f2ed812096
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jottigo.ru/123?utm_term=pink+4+wheeler+helmets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377380/normal_5ffe92d3d4b04.pdfIn PDF document text
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/c8adf96.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/sebufu.pdfIn PDF document text
    • https://somokowu.weebly.com/uploads/1/3/1/3/131383604/6603817.pdfIn PDF document text
    • https://rowiteruna.weebly.com/uploads/1/3/4/4/134470704/83332d6ace50f.pdfIn PDF document text
    • http://zozagemidifisep.22web.org/arkham_horror_card_game_rules_reference.pdfIn PDF document text
    • https://vilegewadaw.weebly.com/uploads/1/3/5/3/135324537/nakemunanag_xajuza_kuvar.pdfIn PDF document text
    • https://sowikidorazeku.weebly.com/uploads/1/3/5/3/135306740/1cba3b258.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457006/normal_60035d90bb531.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405440/normal_5fdf446cefe2a.pdfIn PDF document text
    • http://kopavavabigi.66ghz.com/xikifelelukovesidububimix.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/litunux/guided_contemplative_meditation.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/i_serve_the_soviet_union_template.pdfIn PDF document text
    • http://voxavupe.epizy.com/project_issue_log_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/wapking_marathi_movie_ringtone.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_off0000d0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AF 4960 bytes
SHA-256: b3e07fbfb3d14fedf7fc045738d85a530b9f7895a6fa9e279110ea3688a78d7d
font_01_sfnt_off0000e17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 10900 bytes
SHA-256: 39ed32d67cca1531636ff4b7c8b4385656104c2ff90a4e58cd7bad2a325e753a