Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bafa9547faa074a…

MALICIOUS

PDF

66.6 KB Created: 2021-02-17 10:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d766c22d40d0ed758457fcf97baaac6f SHA-1: 3a2ee6865d52bc31afec5545bcc035e99e19286b SHA-256: 8bafa9547faa074af13ae2bd78fb5f241fa581b2da49167f40b270ac789ce831
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/wix?keyword=tour+guide+barbie+quotes PDF link annotation
    • https://cdn.sqhk.co/mifijizudi/jMlMieY/ronenubonerowufuwulebigex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453734/normal_5fe8b237447c3.pdfIn PDF document text
    • https://cdn.sqhk.co/sebudesusoj/dgghzjd/warren_buffett_quotes_on_life.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5fd332b71657b.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/ijgghjS/best_among_us_mod_menu_android.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunagakiz/Tiejbvt/bottle_flip_challenge_2015.pdfIn PDF document text
    • https://pulimogub.weebly.com/uploads/1/3/4/3/134312020/4046cd53581804a.pdfIn PDF document text
    • https://kutakikojog.weebly.com/uploads/1/3/4/6/134688668/6f65b2b23e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368218/normal_5ff6395414c80.pdfIn PDF document text
    • http://galubiwigo.iblogger.org/fugoxuruvurijid.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/HTWbhdL/59661445250.pdfIn PDF document text
    • http://duboxol.iblogger.org/flashcards_for_kindergarten_walmart.pdfIn PDF document text
    • http://gujinir.22web.org/56277246655.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/vhhifih/kung_fu_panda_dragon_scroll_meaning.pdfIn PDF document text
    • http://medupaj.iblogger.org/98675967626.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/zgcpheC/joporogefarexoxelotuw.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/gjE23gG/gizenirudovabusube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxazulofonu.epizy.com/zuvamudijujokibej.pdfIn PDF document text
    • http://disozisujenat.epizy.com/84650441099.pdfIn PDF document text
    • http://rufofexejojar.epizy.com/75140595511.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_off0000c810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC810 5176 bytes
SHA-256: c678ca96ffd1ff9918bd1162d066c2c1b807d7de540b4a4271c283755b6ea18e
font_01_sfnt_off0000d9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AD 10468 bytes
SHA-256: e3e957ab5549a961c9f0d2e98d4c2cfc0323de8894deaca1371e239da8d66360

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