Malicious PDF — malware analysis report

Static analysis result for SHA-256 146734215a8fb266…

MALICIOUS

PDF

84.2 KB Created: 2021-02-18 23:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 70bcb6b1c58736d9dc6659d2f2e03603 SHA-1: c1f5692f604670ee5afb74b7c7fbca5ffbc309a6 SHA-256: 146734215a8fb2667cab3a4ea7b2ac240a11c8b950e48094c7e36639a865e56a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL likely serves as a lure to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+much+is+reduced+fare+for+seniors In PDF document text
    • https://cdn.sqhk.co/duvetezoje/ijcGijt/tabupunujelinu.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/btG3iap/portal_quest_best_lineup_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/icgdjah/stack_fall_guys_ball_football.pdfIn PDF document text
    • https://dabamupusoga.weebly.com/uploads/1/3/4/2/134265366/duvoje-verosufemab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374852/normal_5ff5d601a8d27.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/Qif0iaI/subway_surfers_world_tour_london_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/fFohgjj/bullet_man_3d_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/2jaRhiL/microsoft_word_dictation_software.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/jxia6gj/wewokenederexuzulib.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/labitajaxatufib/broadcastify_police_scanner_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/67014875422.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/72391663176.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/36880620734.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF686 5280 bytes
SHA-256: 00d48ff28974e15a506a2387175fec2b20df275a2e5746442ae21a3061f67001
font_01_sfnt_off00010862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10862 11180 bytes
SHA-256: 163265f1e6f867f35c6c063145a4f96dc6c25570d44048767e46ea59caa5feed
font_02_sfnt_off00012ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA6 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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