Malicious PDF — malware analysis report

Static analysis result for SHA-256 93af440074cebcf2…

MALICIOUS

PDF

66.8 KB Created: 2020-11-10 11:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b75af42dace75af0f4d38c6da8e1aad8 SHA-1: dc381fc268455f665ef2efddffc4804f18cbcdc3 SHA-256: 93af440074cebcf2c1ca2b32b1dc4d2daf5f514fd33710dc9b5b961966847709
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The embedded URLs and the document's structure point towards an attempt to trick users into visiting potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://trafffi.ru/strik?keyword=best+iptv+subscription+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426815/normal_5f9f3151942ef.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/xoxerejalud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5f9fe336d098e.pdfIn PDF document text
    • https://ridulajevu.weebly.com/uploads/1/3/4/3/134352946/2125009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408593/normal_5f9ff10cf3fc6.pdfIn PDF document text
    • https://jezugazaditok.weebly.com/uploads/1/3/4/6/134601365/1403057.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/gugox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_5fa57e1333b2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_5fa25f037308f.pdfIn PDF document text
    • https://gunosevibo.weebly.com/uploads/1/3/4/7/134716368/pigusejomul_zemekufuwes_sotatixiro_muziguxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454049/normal_5fa350058d852.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/loxopi-runozajekup-zekunamebuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387577/normal_5f8f3c3a21e54.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_off0000c5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F7 5208 bytes
SHA-256: f1b28e410323d2e7cb7df353189e86a1cb9e2a9c68ec5e1ce480b981c538f43c
font_01_sfnt_off0000d7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CB 11024 bytes
SHA-256: 078a8aa45f28388e024acc46f90d35aeed16401f8d7efeff5703ac76fbfcb4c0

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