Malicious PDF — malware analysis report

Static analysis result for SHA-256 26da3b573744036a…

MALICIOUS

PDF

71.2 KB Created: 2020-12-19 18:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 7ea36595f1e72e40dc567063e34099fe SHA-1: 28841f0f673027f9489939f0742bdc54d9178030 SHA-256: 26da3b573744036af07a0da2d5234ca4b7d490f9ac5337b444a35e6d16206242
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating a mass external PDF link farm, with one prominent URL being 'https://trafficel.ru/aws?utm_term=dubai+police+report'. The document body, though heavily obfuscated, contains text suggesting a 'Dubai police report' lure. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/aws?utm_term=dubai+police+report PDF link annotation
    • https://digufotunu.weebly.com/uploads/1/3/4/2/134266503/1964205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_5fab85dc39fee.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/jinabisura/88072285343.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/32637552658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9967b1f-5c47-4cec-956f-83cb2325fa35/figabazofur.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/55522156917.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64483ff13940aa2640bfd/t/5fca86cddee23a47f8e2cff7/1607108302721/jexiriruliko.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/encyclopedia_universalis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c0fe52-4dbd-4f11-8ceb-3aeae7877a5d/54371466563.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a7b4e98326c0206a758/1606371965060/dolifavola.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/autoestima_que_es.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8df82ef-d8df-4d08-be50-5ae01997e640/ver_capitulos_completos_de_vecinos_novela_colombiana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/626ba1d5-901d-4478-969d-30d7ffecfa1f/84577599981.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_off0000cd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD29 4664 bytes
SHA-256: d83eb46e0d38c1bb802509a3552768c971f09b99e806896ce27ab1461c6b3f72
font_01_sfnt_off0000dd11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD11 10808 bytes
SHA-256: a2dfd6150cf52391bc15e93e3de5986872e84fe2cdbe28fea7c350d47c740d7f
font_02_sfnt_off000101e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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