Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddba7bdf92234f8d…

MALICIOUS

PDF

59.4 KB Created: 2020-11-10 09:35:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f3838d0fd829cf1bc767116cf4880aa7 SHA-1: 15d778e46ab233290359ee55d392f17dad7e4c04 SHA-256: ddba7bdf92234f8d5b59d14a95a3826dd3aed5e78709f6cb37a4078d5e291d0c
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 'traffine.ru'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing attempt disguised as recipe book content.

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://traffine.ru/123?keyword=master+recipe+books+ffxiv In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mukutud/56711932656.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/un_show_mas_temporadas_completas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d6cfc97-3b8b-4554-89a0-c3793f1f3cbd/wozonozo.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/97064506662.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/terrarium_tv_patched_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/18495503046.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/separation_anxiety_game_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/sufenigejajiwaji.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/zijeletori.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/60265781459.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/organic_field_corn.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/washington_nationals_club_seating.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/endless_war_7_game.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_off0000abfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABFC 5316 bytes
SHA-256: c185b1b391cbd70d8ffc08913fe6e27f62fc74e0d010729da527b0ac01669ed7
font_01_sfnt_off0000be32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE32 10232 bytes
SHA-256: 38d54e0f8408107d29e93fb6cb108405a36aac9ea00b8987696e3fb029f6ee2b

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