Malicious PDF — malware analysis report

Static analysis result for SHA-256 928694f541662f30…

MALICIOUS

PDF

475.7 KB Created: 2021-01-11 08:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 757cc2d37dbd6bcbc54ffbfbdcc5ba2a SHA-1: 142f68e2232cee268daceecefbdf8509ba73be12 SHA-256: 928694f541662f30b46313b312f7dc977b50b23e563cb3e4a8f1fa481e56eb37
162 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/123?utm_term=dbz+goku+height'. The presence of urgency language in the document body further supports a phishing or social engineering attack. ClamAV detection and ML classification also indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8897

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/123?utm_term=dbz+goku+height In PDF document text
    • https://static.s123-cdn-static.com/uploads/4392664/normal_5fcce664558a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5fc7cc22032be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413467/normal_5f9bdaa1c9fcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_5fa3892d0ee61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422148/normal_5fe44803227ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5f895dcf8ae13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404738/normal_5fef0c5ac4e4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373261/normal_5ff983661fdd7.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/xetasif/fox_youth_clothing_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/vusaxozipidivi.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/business_profile_for_catering_services.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/tangled_movie_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/html_tags_table.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E673 16784 bytes
SHA-256: f830e3c8f6326fba3fd35add71dc60e5935f1a3b5cfb7d3f74362c80f186dc76
font_01_sfnt_off00071d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D55 4684 bytes
SHA-256: 3f5753c4c6a29d6dcb81738cb2689c03e6026d6d22788c4fdb94f48a0bb744db
font_02_sfnt_off00072d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D5E 17120 bytes
SHA-256: 3e5321cec0a832be61b8a469f200a197997c98f8935a72e99595725db184113c

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