Malicious PDF — malware analysis report

Static analysis result for SHA-256 d175ff4d50dd0716…

MALICIOUS

PDF

71.6 KB Created: 2021-01-03 05:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 71b7bbd181d94db5f173a56e9f133057 SHA-1: 6eec94c9c4e5aa764c98fce5def136e5b55e8586 SHA-256: d175ff4d50dd0716176fbcf1a51fd831f55a4489fc1ae92e867164f19ce0b81e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing or credential harvesting scheme. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attack vector.

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://trafffi.ru/123?utm_term=midway+rv+park PDF link annotation
    • https://cdn.sqhk.co/pemiduwegam/mvjiejg/facebook_portal_mini_vs_portal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5f89d285d04e1.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/gjiePjd/spiralizer_zucchini_salad_recipes.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/842c6c72-8d24-49a3-934b-2887b47a8a1b/toni_morrison_home_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/493a55b5-5c10-4cf9-935c-1029585208df/thank_you_for_being_here_tiktok_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1696250c-ae9c-4aa2-b4ef-9536ebb6af32/monterey_park_elementary_salinas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e7820f1-ca1e-4140-b749-bacef9a357c8/matoya_s_cave_ffxiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0c8223c-9286-4bb8-886b-51b8b8eacfef/78996310347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcac2b3-dbb9-41ac-ad6c-82b28598a38a/bagaduxuganuzusate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/714c6b1f-f6b3-40f5-b481-e20665e018e6/37186958288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57b59bd8-e549-47c7-89e8-915f4c28e554/deter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ccab1c2-70ea-4af5-852a-546f8b486f32/white_miniature_schnauzer_for_adoption.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/466d81e5-f6ed-4dd1-a80d-481a1f932c13/xoramidi.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_off0000da6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6D 5068 bytes
SHA-256: 45d90ee458a32f6e8e0c49a03e668b5ca51ff30ee5dcc45fb07f2e3acd61b182
font_01_sfnt_off0000ebe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE6 11564 bytes
SHA-256: 195595feb3bfcfefed3de2776115c9d3d5a7681083dcae194fafc51d504726ed

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