Malicious PDF — malware analysis report

Static analysis result for SHA-256 deaa04d1bae303a7…

MALICIOUS

PDF

71.3 KB Created: 2021-02-28 04:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a9a9b2cad8c396865f7d5dd9565cec4a SHA-1: f8b665df655b2d9cb3dd32d0ae745a43a6a6526e SHA-256: deaa04d1bae303a7fc15a59a39938c00c37c6269f9e184c8e4185e7b639ac170
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. One prominent URL, 'https://maypoin.ru/strik?utm_term=beautiful+creatures+streaming+vostfr', indicates a lure related to streaming content, likely to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt.

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://maypoin.ru/strik?utm_term=beautiful+creatures+streaming+vostfr PDF link annotation
    • http://mapotilij.mygamesonline.org/fanekewavevak.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/gaxudeba.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/ehahamD/shelterlogic_tent_parts.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/mercruiser_service_manual_16.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/j3wijBH/wakuzuvurujejileme.pdfIn PDF document text
    • http://bevatijiwavefad.22web.org/15903312852.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roduteberilexel.epizy.com/lisuzadaduwizomo.pdfIn PDF document text
    • http://bawatusarab.epizy.com/free_journeyman_electrician_study_guide.pdfIn PDF document text
    • http://tupusivamiguta.rf.gd/fosodorote.pdfIn PDF document text
    • http://kusodofezakata.rf.gd/33251110403.pdfIn PDF document text
    • http://vibesiwag.epizy.com/how_to_start_writing_project_report.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/86681787543.pdfIn PDF document text
    • http://junotilunam.rf.gd/towuxivexujako.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0C 5308 bytes
SHA-256: a5a447bb02c798f26a0ee3cf10524c3b9e64296c3ca2abc1fb9dc8c4b800a958
font_01_sfnt_off0000ee13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE13 10336 bytes
SHA-256: 147fb0d9bcb186f21f6212319806513f734cefd31b9d991fb35d7b936b548602

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