Malicious PDF — malware analysis report

Static analysis result for SHA-256 74168d0753729f0c…

MALICIOUS

PDF

83.6 KB Created: 2020-12-23 20:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6598dc82c4fd01d5120400b48f42dbd1 SHA-1: e5b4b18e398661eeb28e887c30ba8ec1ab99d564 SHA-256: 74168d0753729f0c47b11278e8aedd323e8e29a415a3a8baa3a0bdbde8a32b5b
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 pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to 'how to draw descendants 2 uma' to entice users to click the malicious link.

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://traffking.ru/strik?utm_term=how+to+draw+descendants+2+uma PDF link annotation
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/xomozelijoge_bafiwilavam_rupagakufipo.pdfIn PDF document text
    • https://demifezi.weebly.com/uploads/1/3/1/3/131379940/2826374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5fce1756efd56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5fdb038aa206b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/genedonapubefe/kuxaputawuxapakozovepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c812b4a9-de46-40fd-a54b-f7a4f68af91f/patricia_hill_collins_black_feminist_thought_1990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0be8fe2-45a0-4863-b181-06e46db13318/the_seven_realms_book_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1aa8d12-5fd8-4ca2-977b-af250910528f/87721371174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b4e786-6b12-482d-a5d1-fb5a32d6ca4b/ear_piercing_kit_target.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/fool_me_once.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf2f2e8f-ac0d-47de-8a67-c508363be9ba/38595219329.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/86150802472.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27369f1b-8896-4be7-989b-b5d04ce094ff/25598523628.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/the_glass_menagerie_scene_7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA30 5072 bytes
SHA-256: c7f2ba53414b9a1e4d0f5d49baffb0361f99ca8500498b8b67e7dc49718d9665
font_01_sfnt_off00010b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5C 11932 bytes
SHA-256: 46eed23ab946f09976a4dad52237ac3200d3ff50213b8a3de534199e6c2799ea
font_02_sfnt_off00013387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13387 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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