Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a4df000a807181…

MALICIOUS

PDF

67.6 KB Created: 2020-12-16 16:18:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22810a2ab5197e1a5cb9f133b81b4d0c SHA-1: 932fb914c4e3b0164f1728f75616b467c617a14b SHA-256: 19a4df000a8071813340affe931d9dcf97df995a96289f29fed761374ace5eb8
94 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'trafffi.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, appears to be related to Experian and credit reports, suggesting a social engineering lure. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9031

Heuristics 3

  • 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
  • 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=experian+free+credit+report+contact+number
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5f9dff0268de0.pdf
    • https://cdn-cms.f-static.net/uploads/4384154/normal_5fd92f66c4db4.pdf
    • https://cdn-cms.f-static.net/uploads/4411218/normal_5fb2cb3e90c27.pdf
    • https://static.s123-cdn-static.com/uploads/4459166/normal_5fc82ad113ed9.pdf
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5f8cc952393c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc58e295687f52b6ba0bfae/t/5fc82442094cf7617db53f2c/1606952003041/casino_magic_free_slots_machines_100.pdf
    • https://uploads.strikinglycdn.com/files/4d49b484-9441-463b-a2b0-c6e85a301450/58001990244.pdf
    • https://uploads.strikinglycdn.com/files/c4f3a896-2f9b-403c-8127-ba5604a74fa7/cuppy_cake_song_ringtone.pdf
    • https://static1.squarespace.com/static/5fcdea7bc190381d6d631441/t/5fd0c3e048ae4d121809b887/1607517152842/lanenawela.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/messenger_lite_apps_2018.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28d.bin
abae083386e4cc1c9113dc98f2c02596186c974da42de9f21831314330dcedbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF28D 5256 bytes

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