Malicious PDF — malware analysis report

Static analysis result for SHA-256 8382e4c7deb5b360…

MALICIOUS

PDF

61.7 KB Created: 2020-11-10 11:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1b167c66441fdaff8ee7a480c0b0ee84 SHA-1: 40ed88f71d8380d40f207a93d91db55134414573 SHA-256: 8382e4c7deb5b36091e97508f3e1dea95134e30128444a1a571067dd1784d0e2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffmen.ru/123?keyword=ionic+bonding+activity+answers' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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.
  • 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://traffmen.ru/123?keyword=ionic+bonding+activity+answers In PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/fc67d88ecad56f.pdfIn PDF document text
    • https://dekobela.weebly.com/uploads/1/3/4/3/134332871/7b89fa3ff3a9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5fa3097363ab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5f8997dd62fba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388420/normal_5f962c5b03340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_5f99619ab51c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f8a268c2c44b.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/5be0daef30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dc6d3a52-0488-42a1-9880-462efe5905c2/65712933441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf711e4-e79b-4258-8d34-9281c7f83e86/44121258545.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_off0000a96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA96D 5196 bytes
SHA-256: 33a4cddcb69e27cf7738c87e984129cd45c747cf7bff777b5da0f0bfbc65f2f7
font_01_sfnt_off0000bb31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB31 9648 bytes
SHA-256: f66b82cf100fe18db79682e992684c8a7034ca19107d1adf98238affa5fe652b
font_02_sfnt_off0000dc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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