Malicious PDF — malware analysis report

Static analysis result for SHA-256 9186c3e9a2e4337a…

MALICIOUS

PDF

67.7 KB Created: 2021-02-16 08:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0c35c84d25d4de24b5b02d182e644a01 SHA-1: 4f02310fbee9759ee9d0384d85ae477eae302571 SHA-256: 9186c3e9a2e4337ad2592313f310289252dcd7f24d6e85bab8a26c1b6e5ba482
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=garmin+etrex+30+instruction+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5fde05c505dda.pdfIn PDF document text
    • https://bunemanedadon.weebly.com/uploads/1/3/4/4/134476229/9018530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_6015d952bb2b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450356/normal_5fe9ad6163e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_60286d29a0444.pdfIn PDF document text
    • https://punuvenow.weebly.com/uploads/1/3/4/4/134445800/morure-mugelu-mopomunimorolig-sozisitigajan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_60185bb7c7a9f.pdfIn PDF document text
    • https://vilavabakawo.weebly.com/uploads/1/3/1/6/131607043/2023661.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/tewugedaboga.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/7201097.pdfIn PDF document text
    • https://gadolelexuzited.weebly.com/uploads/1/3/4/4/134486477/simigag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5fcfef27290ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471083/normal_5fc6aaa56323d.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/bizamesuwepe/black_italic_font.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/accounting_information_system_ppt.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_off0000cbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD7 5348 bytes
SHA-256: c180c7c3f96198ac4e4c6fa49a69f919cfbc13dfd02b732bd23f9c3da5b90cb6
font_01_sfnt_off0000ddf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF2 10616 bytes
SHA-256: 0ea35444e2d84a94012ac0eb75f0294d975f94570440ab6c28aece20955ca470