Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e54d37a593ea01f…

MALICIOUS

PDF

66.2 KB Created: 2020-11-18 17:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 43fd3d09976e0876309ce74145ba01a6 SHA-1: 90558615da001617d7b70375af1c026a74c9a8e2 SHA-256: 0e54d37a593ea01fedafc83fe3328fc4d199892b275a68aef7839275c8dd9310
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The primary IOC is the URL 'https://traffine.ru/123?utm_term=right+left+story+game+for+baby+shower', which is likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=right+left+story+game+for+baby+shower PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408981/normal_5f9f206e6dd19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5fb49b9a73b66.pdfIn PDF document text
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/jivitatuwozodose.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/d19ed798-f90f-4ed2-a19e-28a297e7547c/ridaximopebolerabanemew.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/30071532072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53510e2-0b96-4897-bb14-5ee50f5c3d6a/mobawipivawubisuneza.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/13555877663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90e6c9e0-8432-4a98-a215-0767521cfbdb/88347293977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10ea33e-326e-4de1-81d2-7d5c213574c6/96004733463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b90b95e-4e3b-424d-af0a-aea4d478968c/zupisuponabagezuvix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee73f2c0-0652-4bd1-9e01-3ef27ace0171/constructed_response_tips.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/ring_of_gyges.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/52436632391.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_off0000c6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F2 5520 bytes
SHA-256: e0f7558bd42335ab1118f6ab1770e0eb28dba1dba1d25a9311cd1e1cd3643ef8
font_01_sfnt_off0000d9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B1 10088 bytes
SHA-256: 51c2276f3e738044968f38df243e1578c2d63f7e7fdf62506faec877186ca991

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