Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe2b244ae4d7b2a…

MALICIOUS

PDF

59.2 KB Created: 2020-11-11 04:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 998ad6bcaec3dd050622dd56163a0b20 SHA-1: b0dafaf739ebce07c1446dc95dd6ee68d1412846 SHA-256: 9fe2b244ae4d7b2ad34cc0c85cceedf78f2bf6bde4f70060d65c372f23f3e243
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The document body, though heavily obfuscated, contains keywords related to a 'baby alive food packet template printable', suggesting a lure. The ML classifier and ClamAV detection further confirm the malicious nature of the file.

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
  • 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://traffking.ru/123?keyword=baby+alive+food+packet+template+printable In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417999/normal_5faa5484d40b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870b78534dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418778/normal_5f9738221afd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f91eff682143.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/gopuze/super_mario_unblocked_games_76.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/alchemical_symbols_and_meanings.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/juborijifixinazikatudita.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/focus_worksheet_for_kids.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/femal.pdfIn PDF document text
    • https://s3.amazonaws.com/medadele/lagekalevebogewenowusuvij.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/reader_s_digest_humor_in_uniform_jokes.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/muzedijebijemojonuzejo.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/lng_bunkering_vessel.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_off0000ad48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD48 5540 bytes
SHA-256: 53ce80b692ff257e47b796733e87bc312e3b370499fe71e1043afa38c6aaf006
font_01_sfnt_off0000c015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC015 9388 bytes
SHA-256: 95e935f178cb18c64feee7000e7133c56eabd8b346dae71a2f6e81958712aff0

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