Malicious PDF — malware analysis report

Static analysis result for SHA-256 863086158bb2de61…

MALICIOUS

PDF

92.9 KB Created: 2020-12-23 10:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 11465027c23e42fb3320d739505312a8 SHA-1: dbf06069ab8b5460f80a2a2fce84f3f7be0ae25e SHA-256: 863086158bb2de61fe324ac964d9aa4801f8a96a135fb585356b91924c6f4829
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://traffmen.ru/123?utm_term=john+howard+yoder+the+politics+of+jesus+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://traffmen.ru/123?utm_term=john+howard+yoder+the+politics+of+jesus+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5fa2589687ed0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc4d5be12facd59cec62577/t/5fcbe60d9d29b56e4d1008fc/1607198221439/88937780404.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/9760927211.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/64794789734.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/kurilizuwarewarutemi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd13ed31dcc34bf48d61e7/1606226926023/oval_bathroom_mirrors_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/laveji.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/statistical_analysis_with_excel_for_dummies_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/xoreludojemexexekegav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001216e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1216E 5384 bytes
SHA-256: 3ac8abebb641b2530301b82cf286c05521a3a2deefa26e4d18158e5c9abfaef2
font_01_sfnt_off000133c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C5 10660 bytes
SHA-256: 48f540fe9760e04dc1ea12a4c850ea8e2de7de13db5647aaf56d1589d180a4dd
font_02_sfnt_off0001584d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1584D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e