Malicious PDF — malware analysis report

Static analysis result for SHA-256 0542a8cfc3a8153d…

MALICIOUS

PDF

77.4 KB Created: 2021-02-10 03:14:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f5d0c4edeb2f987973fb0d8351ae15e8 SHA-1: 8e265c1839e1a61e22af5b7b0de69729acb38d22 SHA-256: 0542a8cfc3a8153ddbe191eb664d5a9cbbbbd947ea0eb7f547fd8751221ee65c
126 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, many pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/aws?utm_term=discord+formatting+syntax PDF link annotation
    • https://kewegiru.weebly.com/uploads/1/3/1/4/131438086/jowiviwag-janonap-zegarat.pdfIn PDF document text
    • http://wijeripe.iblogger.org/game_championship_manager_mobasaka_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/d5Hiaif/1072064946.pdfIn PDF document text
    • https://wezawelo.weebly.com/uploads/1/3/0/8/130813956/c2922ed7ae98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_6011525a01e13.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/REm8Kif/gcss_army_parts_status_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389090/normal_601d91513368d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413345/normal_5ffba2ab0420d.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/ihdJigK/arijit_singh_songs_download_pagalworld_mp4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_600fb0530aaf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418579/normal_5febaafe17636.pdfIn PDF document text
    • http://fb-copyright-help-from.com/87195148792iwwsq.pdfIn PDF document text
    • https://letateworu.weebly.com/uploads/1/3/4/3/134365764/nijoz.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
    • http://wilafeduzavedew.epizy.com/90673530516.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_off0000e40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40A 5148 bytes
SHA-256: 277718a7099cf9d78eb1cf0171c4eb58ca07af87eaeec2e2f88f53e5faf8d0e1
font_01_sfnt_off0000f571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF571 10788 bytes
SHA-256: f53a2057459f72df706ebab8e38637f676e0627177c764c2d5daad22ca50640f
font_02_sfnt_off00011a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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