Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e18da16f91fe900…

MALICIOUS

PDF

69.6 KB Created: 2020-11-24 20:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: db6d9dcc4dc70283280a26a0294bc75a SHA-1: e4182762a485667bbea5b5cb877f038dcc63d583 SHA-256: 6e18da16f91fe9009b9d83ad3002215547166ac7fbce47caf6151bcc7706aabb
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 detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'https://trafffi.ru/123?utm_term=what+is+zoned+r4+mean', which is likely part of the phishing lure. The document body, though heavily obfuscated, suggests a context related to search results or informational content, reinforcing the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=what+is+zoned+r4+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417306/normal_5f96c28aeedc6.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/19ebd4d5-d6f4-46ce-9c21-34593f42d238/kenevimomulerimovobaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/404dde84-c7da-4052-b62a-05fa3efa4366/kana_boon_yura_yura_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcac03f0-1cf2-4efb-b17d-e8d54c12a5c4/29239989298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53bc52bb-98b3-47a2-bd8b-9a4c77bf09d6/lokaxazabudotuwip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8a6f28-4a27-4909-8498-19fd204ec454/50906048867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/051e4ce5-b72c-4944-91d4-886e63ef6c64/kiwepirimizafowip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3968654b-184c-4578-8b30-c0bd3495aeee/29918831422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef66fffb-5da9-4a16-8248-9f5657df3bce/linkin_park_with_you_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd4596c-def3-4bff-ac10-8fb912dde69c/anlar_kimin_iin_alyor_yorumlar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d63d5cef-de2a-4b48-90d0-a2927787aa65/dna_the_double_helix_coloring_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ece8b9d-ba95-404b-bfca-ef6540f295c4/30622509697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771af9c2-2a3d-4d1f-ae72-734633da46b1/robupifupetovatitowo.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_off0000d11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 5184 bytes
SHA-256: f1f0e68722797b797ff03bdbdded0754bad354281c1b970e9b4822689a53d625
font_01_sfnt_off0000e2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 11060 bytes
SHA-256: 7bc7e2501d4360b02700bc357a6f277db99d1f4c4e5823904d53c10798cf1147

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