Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e967e62316fbb41…

MALICIOUS

PDF

68.9 KB Created: 2021-02-19 00:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 17fe0e56d11300899c5d3bd6d31d2af8 SHA-1: d2e3b82f5cbb16fc3c0199be5a64f6c3172400b0 SHA-256: 3e967e62316fbb4155a5f1b2f434f01137b3b93627d2253150c91a14c99734a4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL being `https://baarspo.ru/wix?keyword=harry+potter+7+online+parte+2`, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of many external links points to a watering hole or phishing attack.

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 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://baarspo.ru/wix?keyword=harry+potter+7+online+parte+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452395/normal_5ffac0665906d.pdfIn PDF document text
    • http://matras-24.ru/pipajexixovi1y8.pdfIn PDF document text
    • http://smcjd.com/4312410694241sh6.pdfIn PDF document text
    • https://bozadabeduli.weebly.com/uploads/1/3/4/8/134869561/junep-xubuxiwagagog-vutosiki-fuwugobesufim.pdfIn PDF document text
    • https://natadafupekex.weebly.com/uploads/1/3/1/8/131856288/2510491.pdfIn PDF document text
    • http://lulodexav.iblogger.org/19736324417.pdfIn PDF document text
    • https://cdn.sqhk.co/muvasesuru/W61Xg5q/metro_speedway_hunter_location.pdfIn PDF document text
    • https://cdn.sqhk.co/gevopobi/i7hf8jc/4040991056.pdfIn PDF document text
    • http://vizit.store/49379982993ou1v.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/ieigL76/92832534817.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417429/normal_5feea67096f6e.pdfIn PDF document text
    • https://xuredetinumimo.weebly.com/uploads/1/3/4/6/134630251/60ff33d32.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/ahiGWjg/90471563864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kefujaforu.rf.gd/51693855198.pdfIn PDF document text
    • http://zenuvivasefum.epizy.com/polk_magnifi_max_problems.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_off0000d273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD273 4908 bytes
SHA-256: 8d0d35e0504d62e71541b6d7360ae0df116f003d630e3adce834b059bf32d052
font_01_sfnt_off0000e342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE342 10368 bytes
SHA-256: ad1fb05cd7072658495cc405d016969f731e474666ef1a381ce8d557f0dd9726

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