Malicious PDF — malware analysis report

Static analysis result for SHA-256 beba2214235c76ea…

MALICIOUS

PDF

70.5 KB Created: 2020-12-29 14:44:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 71baee41405d81b01211aa1b7dca698f SHA-1: 268afb6a0027fd6e3cdb6f346013fff5f8c67f5b SHA-256: beba2214235c76eac2dff832eaacf4d55c50dca2cc165006dbb53203c9f42487
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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/strik?utm_term=advance+auto+parts+augusta+maine+phone+number', is the primary indicator of this malicious activity. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=advance+auto+parts+augusta+maine+phone+number In PDF document text
    • https://static.s123-cdn-static.com/uploads/4473890/normal_5fe48e8fb1b0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414153/normal_5fdb2a676a258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420237/normal_5f99f83a7a919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f9e896a67047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f8f4b0244f72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f9b3b54de1b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402706/normal_5f96418fc541e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471252/normal_5fda40342407f.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/icigi0Y/zozerowed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5fb8208fb2e6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5fcc2d0edad02.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/fijmGic/78495907563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2af05cd7-49c5-400f-b84c-50e739608972/33969241024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ee08b7-1790-4f0f-979b-408ee1fa2a6a/la_vibora_de_la_mar_en_nahuatl.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_off0000d2c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C8 5644 bytes
SHA-256: 72690bf55c74d5592a2990c298987d6caf30ce0ec99be5ec9944f5cc7678c61b
font_01_sfnt_off0000e5d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D1 10948 bytes
SHA-256: b4c472b7f1ef525a1bfa61c367421d25c81e9fe559180c13b97081e1dda2b338

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