Malicious PDF — malware analysis report

Static analysis result for SHA-256 5464c708ed439b28…

MALICIOUS

PDF

68.1 KB Created: 2020-11-14 02:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: aab7e70a1109931af3d11ee98b146b3b SHA-1: 2c541b0137ca895066e8d0a11e9742fa8a7eeb83 SHA-256: 5464c708ed439b2878fd6c3d54dcaeb4a1ca58db0d5ae32b8ecdf2c5bf57a5ef
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious or spam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?utm_term=mla+format+bibliography+for+book PDF link annotation
    • https://xazujojupise.weebly.com/uploads/1/3/4/4/134493550/pubod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5f92dc1126ba9.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/votubukaxogilix/42503913822.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/alan_walker_on_my_way_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/hungry_shark_cheats_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/pneumonia_komuniti_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/tamil_palmistry_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/25529612712.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/52329670239.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/gebixokasa.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/teachers_day_wishes_in_tamil_images.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/mekatok.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/permissive_hypotension_nice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/28799769643.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_off0000cc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8F 5448 bytes
SHA-256: ed073f12ab776f7461ea0d398736128b84141ce1da5f783ee3ae504898220995
font_01_sfnt_off0000df0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0A 10612 bytes
SHA-256: 1a21653cd1c8043df0ea5fc9eaa264688daec693e19d7bcd230b2fe3948efe6b

Open this report in the interactive analyzer, or submit your own file for analysis.