Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccbe57f97f257e5…

MALICIOUS

PDF

66.5 KB Created: 2021-02-23 14:58:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 03d7189ba3f68d45d5c518cde0f47871 SHA-1: 89440c2270c324d1173f6f1b090fe2311eb3a88b SHA-256: 0ccbe57f97f257e5bfecf155b1850133cf43711c13573f24313afc0e47b6be06
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple detection engines, including ClamAV and an ML classifier. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The presence of embedded URLs and the overall structure strongly indicate an attempt to redirect users to 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://seumenha.ru/strik?utm_term=edexcel+chemistry+igcse+textbook+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466161/normal_5fe0cce140391.pdfIn PDF document text
    • https://cdn.sqhk.co/xujuvotu/YOhaijg/niwasonodo.pdfIn PDF document text
    • https://wodanosivowifig.weebly.com/uploads/1/3/4/5/134593279/teruwowub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406463/normal_5fdef6c7d0b47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497368/normal_600cc75c01f73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_601babc3c6026.pdfIn PDF document text
    • http://kizudoluwewomam.iblogger.org/hp_deskjet_2542_wifi_password.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366304/normal_600574c184d77.pdfIn PDF document text
    • https://cdn.sqhk.co/gupikekarobo/eeChgij/vijaxuwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370533/normal_5fedf115411f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5fd8d4bd1601c.pdfIn PDF document text
    • https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/e5beefdc8c3f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386335/normal_5ff1558d24060.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poresiz.epizy.com/hardware_installation_guide_template.pdfIn PDF document text
    • http://jasetaroxakil.rf.gd/que_es_autoedicion_en_informatica.pdfIn PDF document text
    • http://takerowul.epizy.com/73275330771.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_off0000c5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A2 5692 bytes
SHA-256: 43d85636a404cf64fed9a3cdbe62ce4347479be2072f61c90da13699ab07df6b
font_01_sfnt_off0000d8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E0 10488 bytes
SHA-256: ebdf42fb93ca4211ebe3fb763764c3eb41ea23e3969be9bd8542285fa12560f6

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