Malicious PDF — malware analysis report

Static analysis result for SHA-256 037ad90204640bbb…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 12:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b0227e49c39c356b13b69d09f236d4cf SHA-1: 947a407708c5e3aaf6c990982789f017c96c5af7 SHA-256: 037ad90204640bbb55a5fd69ac5a1c02d19588af4339304e865cffa3edc25d54
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://jacksth.ru/wix?keyword=lenny+pepperbottom+meme PDF link annotation
    • http://cardio-active.site/dell_compellent_sc8000_user_guidexmgtq.pdfIn PDF document text
    • http://prod-fruit.space/nazavilugusoligalezumu2hd2o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418558/normal_6019b757b90f0.pdfIn PDF document text
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/juboxalu.pdfIn PDF document text
    • https://wujibinofowe.weebly.com/uploads/1/3/1/3/131383737/pivig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479441/normal_601d692923f67.pdfIn PDF document text
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/dekogirimagawer.pdfIn PDF document text
    • https://lerekisisag.weebly.com/uploads/1/3/1/4/131408666/5ab7b86aedec476.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452193/normal_5fe98dd913851.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407318/normal_5fc578a71f8d2.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/jiXjbjb/whatsauto_reply_app.pdfIn PDF document text
    • https://sotugipuzelaj.weebly.com/uploads/1/3/0/7/130738723/1604612.pdfIn PDF document text
    • https://sikefenuvip.weebly.com/uploads/1/3/4/0/134012601/4426297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485457/normal_5fc87e8ca64be.pdfIn PDF document text
    • http://luminar2-download.xyz/allcast_premium_apk_1._0._0._7uvddq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_5fd6cf35a67d6.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/jaghckA/bekovabolulijegujofadiro.pdfIn PDF document text
    • http://trastenmyqort.online/nimaduxibotunokakitkt22t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_60147a3ade6da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC24 4728 bytes
SHA-256: 97f17ce3a6ad6a20286b7aa6de3770ec211c5f5a83c82d35adaf53c11f47088b
font_01_sfnt_off0000ec2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2B 10652 bytes
SHA-256: 7807541c3bda1ef2055f06beab2f28ed3229ca37320945ee6c6a91c9de02ccde

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