Malicious PDF — malware analysis report

Static analysis result for SHA-256 04847d94b6fddd86…

MALICIOUS

PDF

74.2 KB Created: 2020-12-31 23:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e67462932e198951146bf8206f4ca4db SHA-1: bca3ee0d6d6b093a64cebe82b0c56de735b4b3b5 SHA-256: 04847d94b6fddd86256eb6050e6404eb16585ae2e59f6309c12386dd461d9744
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'. ML classification also strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=survival+rate+of+hodgkin%2527+s+lymphoma+stage+2 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4380691/normal_5fe1c937883df.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/fqKGfge/download_game_zombie_shooter_king_mod_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/ejijfgd/finulinatiwipibevodipiwus.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/heicBig/gorimujinosigelipikubu.pdfIn PDF document text
    • https://cdn.sqhk.co/rowalulo/V3yvvCH/block_city_rampage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5fb3315b3a48b.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/fukezavazuj/guided_meditation_sleep_relaxation_10_minutes.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/articulate_storyline_2_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/balkenmher_reform_158_super.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/elmington_property_management_memphis_tn.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/glassworks_floe_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/income_statement_and_balance_sheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/agent_vinod_movie_raabta_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/35479702462.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/jekak.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/82301697690.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/the_curious_case_of_benjamin_button_full_book.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_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 5948 bytes
SHA-256: c67aa1fc6365f5324b89a7d30e127522d8940625efdaceda3d07402af7e4d5af
font_01_sfnt_off0000f71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71C 10740 bytes
SHA-256: 597a39dfcb7248aaa594cd1be1d99a2e7e340b102f92074d1963a799fa1f1dcb

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