Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c04c29486199873…

MALICIOUS

PDF

31.6 KB Created: 2020-10-13 15:36:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 037d7d5f4aec1113e3ce8ce773e172f8 SHA-1: e55385e63264ebab5a2d78a115619c8f328e35f8 SHA-256: 9c04c29486199873e6b2b5dced56b1addd7168376d68500ae39fece890fb902d
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document functions as a link farm, containing numerous embedded URLs that direct users to external sites. One prominent URL, 'https://cctraff.ru/strik?keyword=gopro+hero+3+instruction+manual+pdf', is flagged as a malicious redirector. The document's structure and the presence of multiple links suggest an attempt to lure users to potentially harmful content, possibly for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=gopro+hero+3+instruction+manual+pdf In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/kedoxezezaj-temolej-zunemalavorun-mutelokowomimi.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/038885c85ecf8f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f02e2cb-5853-4a6d-9a7d-76cce441c466/28255108549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b41ca0b0-3fc4-4739-8758-dc216c5f17cf/majarixugerojalebukuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8478f7b2-20f8-4964-a014-8c54cafa3b4c/52950067139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b1993a-5e67-410f-a570-ec14d1b6c282/67998037967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0407d0b9-a3df-4ba1-86c0-7e76e8aeda86/57185198737.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_off00003fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FBB 5588 bytes
SHA-256: ef844a2d3cf04ee6e8bcdf93fa97faa4f062f1fc22aa98e002a5c8712951fe0a
font_01_sfnt_off00005297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5297 9232 bytes
SHA-256: 002906e9a050ebb97a86d0810e6bcf80208dead1a8b79992c9077b15c57b1aa6

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