Malicious PDF — malware analysis report

Static analysis result for SHA-256 960a5fdc1f153e36…

MALICIOUS

PDF

70.2 KB Created: 2020-12-19 15:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c91e588e8855b25c7c71a26269d6fd7d SHA-1: e085654ab3f448e0b7cca5f24ea3a8c653e3859c SHA-256: 960a5fdc1f153e36ced7ed453100ae236f56867e8cf38ef3e43048793b0d92f4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, and the document body, though partially corrupted, suggests a lure related to insurance valuation reports. No scripts were extracted, but the PDF structure and URL are strong indicators of a phishing attempt.

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
  • 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://traffine.ru/aws?utm_term=car+valuation+report+for+insurance PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417643/normal_5fc83c0395172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411229/normal_5fc7b39c2b879.pdfIn PDF document text
    • https://fazotevepokok.weebly.com/uploads/1/3/4/8/134865813/09c9ad7c32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368997/normal_5fc76fe9657ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_5faf9f16d2352.pdfIn PDF document text
    • https://finedogu.weebly.com/uploads/1/3/4/7/134749629/2588181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404738/normal_5fa414c9d6073.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/9cfd7f86-8f19-412e-bcb8-30582279bad8/aspects_in_astrology_sue_tompkins_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e4b108-decd-4423-85a2-aa712037dd71/fezotiwuposamekar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193afb74-3806-48b4-b477-a290fa0d0582/leaf_anatomy_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/22612052600.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/internet_radio_recorder_apk.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_off0000ce4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4C 4972 bytes
SHA-256: 07eaec2cd9a700ccabb799703916a61fdf3b11aa55f2ada1c2dbd7248ec254b7
font_01_sfnt_off0000df4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4C 13720 bytes
SHA-256: fafbebcec097f29c9a7f023025c987c3109e0b1c5ce58d271c7728941f80d234