Malicious PDF — malware analysis report

Static analysis result for SHA-256 4510972146ef148d…

MALICIOUS

PDF

72.2 KB Created: 2021-03-29 12:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf9fbd254f6b23b0fd8add6bbbf9fddb SHA-1: 5151538a62cdd50515ac7aa6eb9e10053aedad01 SHA-256: 4510972146ef148dde96de6849399810f97a621d8ad442413d53c645806df316
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a search query, designed to trick the user into clicking the malicious link.

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://kuzutuzo.ru/wix?keyword=what+does+a+capital+cursive+z+look+like
    • http://gatorama.fun/troy_bilt_bronco_tiller_parts_diagram71ptm.pdf
    • https://cdn-cms.f-static.net/uploads/4413110/normal_6060f9e27402b.pdf
    • https://cdn-cms.f-static.net/uploads/4378382/normal_600b8e559c9da.pdf
    • https://lavozeto.weebly.com/uploads/1/3/0/7/130775819/7087472.pdf
    • https://static.s123-cdn-static.com/uploads/4528876/normal_5ff5d0d84c7a4.pdf
    • https://cdn-cms.f-static.net/uploads/4487662/normal_601813a514c91.pdf
    • https://cdn-cms.f-static.net/uploads/4456114/normal_601d8ec35e8cb.pdf
    • https://cdn.sqhk.co/fapolokid/gdjhkgj/hack_robot_fighting_2_minibots_3d.pdf
    • https://wakevilapiz.weebly.com/uploads/1/3/4/9/134903367/599231.pdf
    • https://bofeliwibetu.weebly.com/uploads/1/3/2/8/132814086/wowosag.pdf
    • https://cdn-cms.f-static.net/uploads/4389804/normal_603d0dc6cdaa4.pdf
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/ea5b8a41.pdf
    • https://cdn.sqhk.co/vapatibu/BCqcijv/offline_language_translator_app_download.pdf
    • http://goshop32.site/suvosaneqzdmx.pdf
    • https://suzokapiwewop.weebly.com/uploads/1/3/4/3/134351383/f151d4b22de6.pdf
    • https://static.s123-cdn-static.com/uploads/4481154/normal_5ff65ec0c8a20.pdf
    • http://smartcreditcheck.info/pevitamedelufibh3l97.pdf
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/logeniwuzebomimamo.pdf
    • http://nuveclovet.xyz/46031153212k2ect.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc98.bin
420a75a2363561fc0b836a04d2a2665fd6f1162da6570115b16f2d7b7195b20a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 5348 bytes
font_01_sfnt_off0000eede.bin
5b68952af754b0983884e53302ac2b53b02d3d0c615f29ca987a8ac36c75f26e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDE 10228 bytes