Malicious PDF — malware analysis report

Static analysis result for SHA-256 524ee7be5c2d2b19…

MALICIOUS

PDF

70.9 KB Created: 2021-02-25 10:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 833b2b861ce4cea1b43a578eeac73579 SHA-1: 5cf945055c99925a2c44021e9ede8e93a8688579 SHA-256: 524ee7be5c2d2b19491af5a73d83b3095ed340beffdda3a05a828bc876cdbd7e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs within a PDF document often implies an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://baarspo.ru/strik?utm_term=how+long+do+furnace+pressure+switches+last PDF link annotation
    • http://dimozakebaba.scienceontheweb.net/panumikutesudalakuxu.pdfIn PDF document text
    • https://dugigoje.weebly.com/uploads/1/3/4/7/134754128/vapajulojej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_5fd18ca6f2dae.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/favoki.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/19410238594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_60287a5498fb1.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/employment_contract_lawyer_free_consultation.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/how_did_hitler_rise_to_power_in_germany_class_9th.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487424/normal_5ffdb7ca86513.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456699/normal_5ff88e06a1c44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477167/normal_600c3be4881b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5fdb541020c57.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajujiju/wexabure.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/digital_painting_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/zeromejexerozifozanojemid.pdfIn PDF document text
    • http://girofili.myartsonline.com/tifax.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/dularo.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/suxuxil.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_off0000d88a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88A 5468 bytes
SHA-256: 8c54461b0fd12ea88130b9db8643eb7043f65c2bb4cb13d2ae08091682622b36
font_01_sfnt_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 10284 bytes
SHA-256: 374c854a53f4d1c6bafd376d3ffb7f58fe74562ddba204b1fd14c35efe2b1be7

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