Malicious PDF — malware analysis report

Static analysis result for SHA-256 727084f7f660c80d…

MALICIOUS

PDF

69.8 KB Created: 2021-02-12 09:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03a025263eb48c9d743c546efb489985 SHA-1: 96c9d0d0cf674ecf27618ed8d9526bfdee6ab100 SHA-256: 727084f7f660c80dc0ec2b0e0da3b30b62892f268c32785116befeec2eb39dfa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=apes+tragedy+of+the+commons+lab+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494883/normal_5fdd8e5a3425e.pdfIn PDF document text
    • https://cdn.sqhk.co/patizuruf/iwheYUg/78174088840.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486193/normal_5fdd11f36827d.pdfIn PDF document text
    • https://xoxisutebigag.weebly.com/uploads/1/3/1/4/131453062/d3b1337335df.pdfIn PDF document text
    • http://cafe-cok.ru/lupegadugawexeliv24wyc.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/jREggP0/84546122905.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_60226d5d57c9f.pdfIn PDF document text
    • http://italiahot.space/463073098968ie9l.pdfIn PDF document text
    • http://autobuff.xyz/banting_smoothies_for_weight_loss8a9wu.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/zulufitek-tenoti-kobafaxog.pdfIn PDF document text
    • http://cafe-cok.ru/cbse_class_12_organic_chemistry_notesarm0n.pdfIn PDF document text
    • https://lazofakivew.weebly.com/uploads/1/3/1/4/131406449/7761923.pdfIn PDF document text
    • http://snatural.space/148979412786gfgg.pdfIn PDF document text
    • http://br1.red/femufumivaseko2fzqk.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_off0000d2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 5892 bytes
SHA-256: c602de46f9710883bdbf2883f645b1c3c48ddc8cd2efdba877585be291581e40
font_01_sfnt_off0000e6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EF 10408 bytes
SHA-256: b74e54931e17c1a12e5e9e3e9c59e7c2fdc20253899934d8afbedcd4e8b8c8d6