Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54c661628536857…

MALICIOUS

PDF

69.8 KB Created: 2020-11-14 10:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b7486e9f7c8dd6ffec73a74d250d1997 SHA-1: da6d69745320492c49c2fca6134ab21c70af15fe SHA-256: c54c661628536857e591010015326020c9651935956e932ae304d56d494c2f87
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This URL is presented to the user as a song download, indicating a phishing or scam attempt. The ML classifier and ClamAV detection further support the malicious nature of this PDF, likely serving as a lure to a malicious site.

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=alli+thandha+vaanam+songs+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4466386/normal_5fab0d5aca04b.pdfIn PDF document text
    • https://kolivobaka.weebly.com/uploads/1/3/4/5/134500933/8520657.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/4334095.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/tizobajevi-dopebulixoni-javomumarilit-roruripofexede.pdfIn PDF document text
    • https://xukejexen.weebly.com/uploads/1/3/4/4/134480318/1e3a6d14d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f96c70d53668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449000/normal_5f9f8137c1ee4.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/f86d88a0-a0af-492e-88a7-bbdfb23344f7/26433243066.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/83865978077.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/actron_autoscanner_cp9575_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/clifford_car_alarms_customer_service.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/62007107099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c33229d7-6e22-4a15-9e41-ee8d4d84b558/kizogawupemepi.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_off0000c70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70E 4956 bytes
SHA-256: 2a23751e8bdd7c5a1ecb3d7b12d1291ffa2f0f1ccc2f93752e3a4cda0aed34e5
font_01_sfnt_off0000d7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C1 10816 bytes
SHA-256: 78a7f45ca53faca1b774ec0a0e8faf06be9834c5d0c2ff0397f8f19d10ba1bc4
font_02_sfnt_off0000fc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC25 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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