Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a41b65974eb4cd…

MALICIOUS

PDF

64.3 KB Created: 2021-02-24 18:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e7efff229e5bee7c14ba03db84afbb96 SHA-1: 2b042de9df9b0fae377c217cb2e54b3292db9dc4 SHA-256: b7a41b65974eb4cd52366083687774a175b2318dd6f47002bd583e160b284961
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=how+much+does+a+rectangular+bale+of+hay+weigh PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463794/normal_5fe01501f3c0a.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/ibjdjgm/pro_lightroom_tips_to_learn_a_new_language.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5fcae829b29ce.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/iPigLhi/marshmello_helmet_plastic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425915/normal_601b27f719329.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/ggkhgZP/space_program_tribe_called_quest_samples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366302/normal_60055ac16993e.pdfIn PDF document text
    • https://cdn.sqhk.co/zoravuzulop/tYzjjy3/jedob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376879/normal_6003ff7e3a0b0.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/sosupejuxofedo/96962951634.pdfIn PDF document text
    • http://fejagokebaneril.epizy.com/32526898530.pdfIn PDF document text
    • http://velumosak.epizy.com/lopaluneloj.pdfIn PDF document text
    • http://vejebuta.rf.gd/aristofanes_obras.pdfIn PDF document text
    • http://tedupogepovajeb.epizy.com/vimuxo.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_off0000c06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06A 5728 bytes
SHA-256: c8d73618bbd537f58dadcdc2cc5a5d26731c3a07aeaf28235e693bc8b444fa1f
font_01_sfnt_off0000d3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 9376 bytes
SHA-256: 31d039b6d9cbf88f70927e8141a069ddc44d37e779950e5f7a8b015ad3270adb