Malicious PDF — malware analysis report

Static analysis result for SHA-256 508e26afda30c813…

MALICIOUS

PDF

71.9 KB Created: 2021-02-12 08:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3d3134d8a1a2c01a11fad221a29914f2 SHA-1: 24c2fa6f2c676e16b8e15ddc49d568bf4772e48f SHA-256: 508e26afda30c8132af574ba03d501827d34b277255cce66f5c2091e9157a4a2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://leonvi.ru/wix?keyword=the+reason+for+god+study+guide PDF link annotation
    • https://cdn.sqhk.co/zapiseniw/qha32hf/mimek.pdfIn PDF document text
    • https://kakowafalajoji.weebly.com/uploads/1/3/4/4/134455686/6882459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417213/normal_5fdde54dbe93a.pdfIn PDF document text
    • http://stroymarketmetal.ru/nivedewenpwuxp.pdfIn PDF document text
    • http://usacarins.com/siamese_fighting_fish_care_guide8qduc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_600d2d2445316.pdfIn PDF document text
    • https://tobejisexin.weebly.com/uploads/1/3/1/4/131454505/fagapijo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485703/normal_5fe83ee5590ab.pdfIn PDF document text
    • https://vipizavubo.weebly.com/uploads/1/3/1/4/131407691/34557464240.pdfIn PDF document text
    • http://futup.ru/margaritas_near_me_deliverysk4c5.pdfIn PDF document text
    • https://cdn.sqhk.co/daruluneti/dzJhvZN/87391392180.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/62a32648955.pdfIn PDF document text
    • http://zoompol.xyz/849441982810mlbd.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/dalava/ronarenepejepesobo.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_off0000ddd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD5 5188 bytes
SHA-256: 83d146e314aba43480a8846141c6d268169a44dcd96306941251ea0cc1234154
font_01_sfnt_off0000ef7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7C 10532 bytes
SHA-256: bfd1760e4e6f6e7f69e18338a82bf834dc426283907ebbf659b6b8f16585100d