Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa3f054eebf284c…

MALICIOUS

PDF

68.2 KB Created: 2021-03-06 21:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3f70ad29b590f88f20ace5be4a401d7 SHA-1: e3b18c53f68866397db9b01d9629c4d5bb8e4709 SHA-256: 7fa3f054eebf284c065615622f244e3a373c7013e0a0443f12d9ebc7a381f713
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to download a file, masquerading as a game patch. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing malware. No scripts were extracted, but the presence of a suspicious URL and the document's nature suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/123?utm_term=diablo+2+lord+of+destruction+v+1.10+patch+download
    • https://static.s123-cdn-static.com/uploads/4383565/normal_5fcbdaaaa25d6.pdf
    • http://banademebilite.sportsontheweb.net/2019_volvo_s60_review_youtube.pdf
    • http://nekidifuton.medianewsonline.com/76417168462.pdf
    • https://static.s123-cdn-static.com/uploads/4418985/normal_6003fb58417a1.pdf
    • https://static.s123-cdn-static.com/uploads/4413567/normal_6002254e33023.pdf
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5fdae0d377ef3.pdf
    • https://cdn-cms.f-static.net/uploads/4476416/normal_602dfdc916ff4.pdf
    • https://static.s123-cdn-static.com/uploads/4491168/normal_5ffeed9a84df2.pdf
    • https://static.s123-cdn-static.com/uploads/4448115/normal_5feaff98ee9e8.pdf
    • https://cdn-cms.f-static.net/uploads/4417423/normal_601fbf45e4a71.pdf
    • http://siwivelijutore.medianewsonline.com/84045861733.pdf
    • https://cdn-cms.f-static.net/uploads/4461232/normal_5fd2fe2a6e5df.pdf
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5ff57d6218c29.pdf
    • https://static.s123-cdn-static.com/uploads/4483338/normal_5ff518357da3f.pdf
    • http://niburufajanuto.sportsontheweb.net/3736889167.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gogonof/the_pursuit_of_happyness_movie_parents_guide.pdf
    • http://buzanuziti.myartsonline.com/93999835951.pdf
    • https://s3.amazonaws.com/gapuruxumeg/jexosedijikuvamuga.pdf
    • https://s3.amazonaws.com/piwupevivotixi/fotubarot.pdf
    • https://s3.amazonaws.com/befafuni/18680681342.pdf
    • https://s3.amazonaws.com/dinigugaxej/zojezuvovomijik.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c00e.bin
028c712ab09bd7b66a00984b249739267228a7dbc6fcfbe31e66b42217e3c430
pdf-font-stream PDF embedded font (sfnt) at offset 0xC00E 5772 bytes
font_01_sfnt_off0000d3c4.bin
3f553c21e8f68587fbb3ab8808fee423a3e67d6df8a2e7fb1255baa4459bd042
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 9636 bytes
font_02_sfnt_off0000f4ba.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BA 4324 bytes