Malicious PDF — malware analysis report

Static analysis result for SHA-256 346b94bb009ec9da…

MALICIOUS

PDF

79.8 KB Created: 2020-12-31 09:39:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 5a005b7946933606e96f270ce0e60972 SHA-1: 72ddf68c625ab1c55d989ac4e80b88806a7257e4 SHA-256: 346b94bb009ec9da6227781153d643d96e0549493e946f4940e9879942e6c4fc
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 'https://traffking.ru/123?utm_term=piano+cheat+sheet'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attack pattern.

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
  • 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?utm_term=piano+cheat+sheet In PDF document text
    • https://cdn.sqhk.co/momujolo/igagckl/3403922056.pdfIn PDF document text
    • https://cdn.sqhk.co/xakatikakizi/jbygcMf/bird_feeder_stand_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/bRphaig/interstellar_pilot_scratchcard.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/geXo3Gu/65766369157.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/fVybjaG/hovercraft_takedown_multiplayer.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/fokapikow/ducateur_de_chiens_guides_d_aveugles_salaire.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/xobexoma.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/usda_wic_infant_feeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/renal_diet_education_handout.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/blank_character_reference_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/87845996674.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/active_admin_form_partial.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/zuvofixewikelotewus.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/clcss_latest_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/terraform_delete_s3_bucket_not_empty.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/93680455790.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/donald_davison_rollins_college.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_off0000f7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A7 4760 bytes
SHA-256: 85369e531b6d9b3c92ce273bb5cf70b2443d9b5681cfeeff3ca4ee9c915eac09
font_01_sfnt_off000107d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D8 13184 bytes
SHA-256: d940a5e9e7f48e7a759f19158dacf981ac0e4a6aa6bc11484929d69ba4034ae1

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