Malicious PDF — malware analysis report

Static analysis result for SHA-256 d941d4c72cf70c48…

MALICIOUS

PDF

69.1 KB Created: 2020-12-13 13:42:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8579f514a690f58320c3aeb50cfa0ca SHA-1: 1e5657a313e3a2f0d47aa177261689cbe3aea8f2 SHA-256: d941d4c72cf70c48da6c033c539e41ca317e66508eec68ca3589330e00bcf4af
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'traffset.ru', which is likely part of the phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?utm_term=aplikasi+desain+rumah+android+terbaik
    • https://cdn-cms.f-static.net/uploads/4463824/normal_5fd12cae37daf.pdf
    • https://musufofijadora.weebly.com/uploads/1/3/4/8/134888277/kalifudil_juxajaneje_voxedukegor.pdf
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/kosevik-nagezes.pdf
    • https://xufidevudog.weebly.com/uploads/1/3/4/3/134389214/e89ac.pdf
    • https://cdn-cms.f-static.net/uploads/4471081/normal_5fa836b95bf8b.pdf
    • https://cdn-cms.f-static.net/uploads/4386851/normal_5f9e71d09273d.pdf
    • https://cdn-cms.f-static.net/uploads/4454546/normal_5fa4586ccece3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f55e477d-77b9-4b63-8325-412d168af418/graph_analysis_lab_earth_science_answers.pdf
    • https://uploads.strikinglycdn.com/files/adacf328-9ac3-48ce-8347-dbb010a8af33/fijabewetoxijajiw.pdf
    • https://uploads.strikinglycdn.com/files/595cdb37-8253-4c04-9826-72082fec59fd/84432409703.pdf
    • https://static1.squarespace.com/static/5fc0baae3dfdd95b60d439b1/t/5fc21d831972c46e3ce69ef3/1606557060073/radio_shack_metal_detector_63-3015_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d18b.bin
551282e35cc01dd9cf420389873c4e42519c080c9afb017de66c8ef873ecb9a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD18B 5392 bytes
font_01_sfnt_off0000e3a6.bin
94631a0c1176328fac15aff637198eec078df283b0a39ac9bb9409d77a537e8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A6 10412 bytes

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