Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e0845702dd279f…

MALICIOUS

PDF

62.5 KB Created: 2021-01-11 12:32:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c182a2065142dda9c481af7b94138b4e SHA-1: 7c75239893b40600505c981d19f13f5b4e78707f SHA-256: d9e0845702dd279fe6b833cd736492d6b20b9f1c647adcb3930ae3e507d4ad47
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to free sheet music, consistent with a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/aws?utm_term=gospel+hymn+sheet+music+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424991/normal_5ffa8d1451b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5fda6b0ee9c2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421934/normal_5febaad241993.pdfIn PDF document text
    • https://site-1175333.mozfiles.com/files/1175333/north_texas_umc_conference.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413375/normal_5ff01d5a8dbf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5fd15ba876b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465387/normal_5fb2e3ec1bcee.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/fugosulazaxapitut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5f96bc10a1de4.pdfIn PDF document text
    • https://jelirakiwovul.weebly.com/uploads/1/3/4/8/134867041/nudelugimav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385417/normal_5f95668d64b6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_5fb3633ed7b02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB863 5176 bytes
SHA-256: 468ddc76bbe005c39ca004bd5449d64520e6fcbf414fb58f902c7280530fa0ef
font_01_sfnt_off0000c9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E6 10596 bytes
SHA-256: d1bf8b62705297c23588eb61542730924199a2c8cba749079c516cbb81fa5f45