Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2a9546682ca511…

MALICIOUS

PDF

46.4 KB Created: 2020-11-04 05:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 256f001a3c1b97bda5c5b5afb436ac75 SHA-1: 2302e639aeba9b7f04500eff37d04f139905e35f SHA-256: 8e2a9546682ca5112f3212045096241c3d8dea2b10281518a2c404f1781a6763
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or phishing operation. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=troy-bilt+tb10cs+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374376/normal_5f9576cebb8e8.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/dutogezabo-kazugewiruriwid-norexi-doparoxof.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/xagugalo_nikopuxuradero.pdfIn PDF document text
    • https://fodewifejala.weebly.com/uploads/1/3/4/4/134491976/1c57286054f1ea.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/4643970e.pdfIn PDF document text
    • https://suleduzon.weebly.com/uploads/1/3/4/4/134403341/watutubidivez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5f9326dd2d270.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
    • https://uploads.strikinglycdn.com/files/d1f34889-d9c5-4631-b269-576a88a26080/45979585991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8364d665-774a-4167-a7ed-a3f40a6eb369/30116925037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/469904cc-aa23-43ce-ab8e-8eec6fe8ef73/malokajowikin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d6b115-8a94-49ea-85bd-09f08a6a2832/11817778563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c01e7fe-4e2e-45c2-bc63-46e7b180e0ee/91042902408.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5124 bytes
SHA-256: 37a0652926922b6ba5b8b1f51ab282bee5c4eef1d761604b77b0872fc3bb67e6
font_01_sfnt_off000078cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CB 11028 bytes
SHA-256: aad75894a97fb23a8acd45fbfd7f85c65f7df8e8b37510546d13942ed369c8e1
font_02_sfnt_off00009e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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