Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf2b8293a2730a3…

MALICIOUS

PDF

78.6 KB Created: 2021-02-24 19:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fc8f1e9b8031f6447481dc56226bb1dd SHA-1: 7e8e0665805d2a452c25a3ab3f42b0750358a5ac SHA-256: faf2b8293a2730a3f85f1ba1493751a9a9c2f5645d9c5bc15f02cb1a6301f64c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites.

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://leonvi.ru/strik?utm_term=hp+elitebook+8540p+i7+datenblatt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382948/normal_5ff82b2e08775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_603418e27a18c.pdfIn PDF document text
    • http://repair-kompov.ru/can_you_learn_arabic_in_a_yearfx7hh.pdfIn PDF document text
    • http://mxbur.fun/83695760718gdrpd.pdfIn PDF document text
    • http://hot-money.fun/27112477332tlwn4.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/2WCC0S6/zumilejikavepatamazure.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/xAifFnF/rururogavezomisesejasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389576/normal_5fd921037a2b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5ffc5533b5232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372740/normal_60084e0653d96.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/85giac6/wawigojirapupesaru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_601f91ce9c554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381297/normal_6013354f15692.pdfIn PDF document text
    • http://trysucre.pro/viva_video_editing_app_apkf2aoe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469119/normal_5ff55b2f64f98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuzariliwit.rf.gd/wadozezopofuno.pdfIn PDF document text
    • http://magapupegijovot.epizy.com/puvovepuralisubifowepeg.pdfIn PDF document text
    • http://xevivalekivo.epizy.com/keloids_silicone_sheets.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_off0000f294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF294 5472 bytes
SHA-256: 7018536f60726114227a286a4ef8575de9c5aaa09954cdd7568deb54e294e110
font_01_sfnt_off0001054e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054E 11312 bytes
SHA-256: 2c6db7aa310158eccf1cb1a9a0235b3a617c8c49ad934afbff263388e462141e

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