Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3a3f9286f33ade…

MALICIOUS

PDF

32.4 KB Created: 2020-11-08 06:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1b21b2cccc092e74ec4c936ed5553002 SHA-1: eaf02bd17306a63c480dd850ddf55ff716bda650 SHA-256: 9c3a3f9286f33adee5b871638466231e20c754494e78d25c0484140e48fe97d8
126 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. One of the embedded links, 'https://trafftec.ru/123?keyword=coleman+grill+stove+manual', is particularly suspicious. The document's structure and content indicate it's designed to trick users into clicking these links, potentially leading to phishing sites or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafftec.ru/123?keyword=coleman+grill+stove+manual PDF link annotation
    • https://gejuvidafi.weebly.com/uploads/1/3/4/4/134456396/c7b64c19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f8735690f130.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/821868.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/6551654.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/968526b0-332d-47ea-b420-41a886ce2e44/tibepa.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/67728004733.pdfIn PDF document text
    • https://gatekisip.files.wordpress.com/2020/11/66987364176.pdfIn PDF document text
    • https://vuworopa.files.wordpress.com/2020/11/disizutozogazap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c394a7ae-919b-4763-8756-1886007cd2e3/40210052673.pdfIn PDF document text
    • https://gifoputesix.files.wordpress.com/2020/11/90169169874.pdfIn PDF document text
    • https://saxofenofam.files.wordpress.com/2020/11/counter_terrorist_2_mod_apk_android.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_off00004221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4221 4972 bytes
SHA-256: 4f4b546d033cf136baa4661c15b4febe7d848946c293db4859fa1fe8c7241d2c
font_01_sfnt_off000052ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EF 10112 bytes
SHA-256: 4beba329ecbda9294445aa59429aafdc6e7038cf8bcdfee12092228495a37c37

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