Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a17256428ff346…

MALICIOUS

PDF

69.7 KB Created: 2021-01-01 07:25:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0096083cea9707c0a4b5260e2fdb3a11 SHA-1: 3a01536f9c513adacf386bc7c242098399b7c0cc SHA-256: f7a17256428ff346c4e34cd5df403038e42c91c0b16754fbb339c4746215a71a
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, specifically a URL designed to lure users with a game download lure. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/strik?utm_term=hitman+2+goty+legacy+pack+steam+key In PDF document text
    • https://cdn.sqhk.co/lidupusumoj/WYHPEEy/find_word_puzzle_games_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412996/normal_5fdf8c8c816c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469103/normal_5feb3b6e60710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f9e8bdd70678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485149/normal_5fc189898d1d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_5fa3154fc9ce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5fc2d302c1fd7.pdfIn PDF document text
    • https://cdn.sqhk.co/rosafipex/hfMhjhb/construction_subcontractor_resume.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/4b2814f2-0aef-407d-bf9b-75e32901c04b/berinetoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d036768-19c8-4498-9a84-ac00f6668f97/monster_energy_fridge_price.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_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 5416 bytes
SHA-256: 82702d93067a794ad91ea8aeb5f42d8bc36e406565e1bbe6f1ab434b569a606e
font_01_sfnt_off0000e50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50F 10956 bytes
SHA-256: 89245c59caee094af761e7c951a6347b54992be4f88d4a0cfb7e717c65d10b8d