Malicious PDF — malware analysis report

Static analysis result for SHA-256 96140cea5a5706bf…

MALICIOUS

PDF

68.7 KB Created: 2021-01-08 13:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8c86c7b26c040431e1fa65b38e065036 SHA-1: c34736508cbaa6306e85dae3e126e0642274798f SHA-256: 96140cea5a5706bf8a39fb868eae44a126ce4759b75bc06b658ce3b6e9958d53
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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that leads to the domain 'traffine.ru', suggesting a phishing or malicious redirection attempt. The document body, though partially corrupted, contains text related to 'Ikea chair pads Australia', likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=ikea+chair+pads+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501989/normal_5fd1c5277bb9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5fe6e09e57d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f87658f859f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5fb2531a04d26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463263/normal_5ff59a303ea29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477138/normal_5fc3bfcb69e36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381748/normal_5fe5b53b848a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444117/normal_5fbee1d0ef0f7.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/7ab4a265-e322-48fe-bd18-a03ae00c7f24/65983077775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b3475d-5ed7-46dd-ba68-296f97ca24cc/kibupepibukejukuzuzugowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd1531c7-ffd1-40c1-bb9a-7a9a635bcd89/74716127047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b265eb2-c3d7-4ebe-a57a-6db240115751/nikon_d3100_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/099346c2-7964-4c80-8798-aa06a682f241/92002380760.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_off0000d020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD020 5160 bytes
SHA-256: 4a1cafaea5d0fadbb1b4f42eebcb2e66abace62a60472b0bef2ab9c406272738
font_01_sfnt_off0000e1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A7 10856 bytes
SHA-256: 57d7a797bf1150b95138a464266cc61cc085b27f43bab89a20f6a9dec2855f3a

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