Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f1b4421bf6fb84…

MALICIOUS

PDF

73.7 KB Created: 2021-03-13 17:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 04966dd7770bd3d4790f3a66889ac903 SHA-1: a07bf04351a73e0e14000a5f59ce7e0ba325d78d SHA-256: d2f1b4421bf6fb84d41f2447dfa4883021c8b90b4574529573f5c8fb0ec486ac
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, and the ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the PDF suggest it is designed to redirect users to malicious content, likely for phishing or further malware delivery. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.

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://golowaki.ru/wix?keyword=digestive+system+answer+key+gizmo PDF link annotation
    • http://jivusibofonefud.mygamesonline.org/21519500525.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381291/normal_5fce47a74ac6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451045/normal_5fc7e02e39de0.pdfIn PDF document text
    • http://delinapod.mypressonline.com/90700996542.pdfIn PDF document text
    • https://debamivuk.weebly.com/uploads/1/3/1/8/131871977/ea931adb.pdfIn PDF document text
    • https://nojijakifon.weebly.com/uploads/1/3/4/0/134012839/fe2d55f4fc.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/403710574199wevv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506063/normal_5fcf0d92aaeac.pdfIn PDF document text
    • http://befujukipepejem.mygamesonline.org/jefofenaduxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483359/normal_5fd281cc6a090.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/agro_ecological_zones_in_ghana.pdfIn PDF document text
    • http://myfavoritesun.xyz/dark_heresy_ascension_classeshw2e0.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/how_to_use_record_player_in_animal_crossing.pdfIn PDF document text
    • https://wajuzetixageg.weebly.com/uploads/1/3/0/9/130969085/1584803.pdfIn PDF document text
    • http://sberpodarok2020.online/18210622914aotc3.pdfIn PDF document text
    • http://pigalimiru.medianewsonline.com/how_to_change_your_belief_system.pdfIn PDF document text
    • http://opticsystem.website/92608538679tb2dp.pdfIn PDF document text
    • http://douchehq.xyz/misal_romano_1962_espaol-latinoi6lp2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427086/normal_6034c8525d898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371010/normal_5ff7ada86cf21.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/7564190.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jemukiguwuw.myartsonline.com/25185825394.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_off0000e310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE310 5340 bytes
SHA-256: dcb20ed2bf0f3b1ba07f93a4e9909c2e0bf8ff7e414704267ccb35990e0fb655
font_01_sfnt_off0000f552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF552 10744 bytes
SHA-256: a7af867ad15debfbcbd041a8056d57017c1ff28109535fc7b60bc60d730b075a

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