Malicious PDF — malware analysis report

Static analysis result for SHA-256 644d57649926b7ad…

MALICIOUS

PDF

77.7 KB Created: 2021-05-11 22:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d0e957d7dc2781981bd262951bc95213 SHA-1: 2dbf7b0125f9acb3e618741be3c248693049e96b SHA-256: 644d57649926b7ad061b8d612d306eb34a4f3111cce55aff270eb8165f0a4238
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL `https://ponafet.ru/strik?utm_term=troy+bilt+pony+tiller+cost` suggests a phishing or malware distribution lure, disguised as a product listing. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=troy+bilt+pony+tiller+cost PDF link annotation
    • https://cdn.sqhk.co/noperizapewo/bQOW0if/artillery_sidewinder_x1_3d_printer_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/gigemuji/jhfjdgd/cafeteria_nipponica_sp_1._0._7_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/jgHYiaW/lefugesumofefilum.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/jjAifd9/polutif.pdfIn PDF document text
    • https://cdn.sqhk.co/baveninale/ELjfgcu/excursiones_para_cruceros_opiniones.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490519/normal_60097ce1d6688.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412780/normal_5feb995f01527.pdfIn PDF document text
    • https://cdn.sqhk.co/narobalof/Ehfifhe/80962549238.pdfIn PDF document text
    • http://stankoff.org/how_to_credential_a_providerhxu7n.pdfIn PDF document text
    • http://raisinshub.club/watch_war_and_peace_online_freepeqqk.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/ejggcia/mastercraft_courser_mxt_285_70r17.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/afacdfed-9d65-4401-a146-ca7f0dab0190/clicker_universal_garage_door_keypad_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/terofefezaxigigobemufimun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/871d4579-3964-44a5-ae7c-5509ff96930f/pumadivelijevugibak.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/list_of_coordinating_conjunctions_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zoburez.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/43876065150.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_off0000f167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF167 4908 bytes
SHA-256: 038a136022e4bca017f1538adb497aaa953c9a475992bd9a25afe79a067e5147
font_01_sfnt_off00010230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10230 11228 bytes
SHA-256: d4dfb5b375dafc712805b1963123de786c6fd32b45b56b030c09d18975bf5ceb

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