Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d44c3703cdb7f10…

MALICIOUS

PDF

75.9 KB Created: 2021-02-28 02:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 07b3761e616ed2c2025b800040f0f23a SHA-1: 70655e3928f1aa2ce896c9c447bda8b3150a142d SHA-256: 2d44c3703cdb7f105122d8822da7f4908caf4c317af0f2e049832fe47ec42acb
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for users interested in product reviews. While no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest it's designed to redirect users to a potentially harmful site.

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://bologen.ru/wb?keyword=proform%2014%20ce%20elliptical%20review PDF link annotation
    • https://cdn.sqhk.co/piwuzuberaze/khdjgib/sporting_events_in_atlanta_tomorrow.pdfIn PDF document text
    • http://trendmobile.ru/949144314161hecr.pdfIn PDF document text
    • http://pasendapp.online/upsc_2016_answer_key_paper_1hupwh.pdfIn PDF document text
    • http://alluniversity.fun/championship_manager_apk_2018jt11d.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/j0jfibG/zekamurupuxagegigigiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450628/normal_5fe09b4904343.pdfIn PDF document text
    • http://peuer.xyz/78743920810in6tm.pdfIn PDF document text
    • http://xtw2.club/singapore_fsap_reportb7u19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446651/normal_603251a4b021a.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/FLgcRhe/badlands_western_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_600ce29b7b71a.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/domegagowevag/whatsapp_plus_apk_latest_version_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/65847371358.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/alphabet_international.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/94923275494.pdfIn PDF document text
    • http://junorijuzijipu.rf.gd/zamopopidupaf.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/81911167239.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_off0000e918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE918 5276 bytes
SHA-256: aa634460fdb498d6864da10e2db7531cd7b1da80a9ac8250f47080cc32c8da09
font_01_sfnt_off0000fb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB15 11688 bytes
SHA-256: 3ab1ba8e46343b91d24e30ff449b2e88d2087c8ad118fbf9275e8d016f1b2dec

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