Malicious PDF — malware analysis report

Static analysis result for SHA-256 a46b608c8093f524…

MALICIOUS

PDF

68.5 KB Created: 2020-12-26 04:17:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e13a4c1b185d2201dab904d7c1e32348 SHA-1: befde7ce70cf8dc85b69f23b1ee742f268a78560 SHA-256: a46b608c8093f5241975ac8798c22c38f6fd36b732f1338d4985c10fae3b862b
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of the primary external URIs, 'https://traffset.ru/strik?utm_term=ferns+and+petals+flower+shop+jalgaon', is flagged as suspicious and likely leads to a phishing or malware distribution site. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains text related to a flower shop, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=ferns+and+petals+flower+shop+jalgaon
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fd2723e4d540.pdf
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/fd1adfc8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8287d944-bbb6-4f95-a064-4fb4ef1ddb09/60202636340.pdf
    • https://uploads.strikinglycdn.com/files/ff3c3f5e-3d09-4c0d-8dba-ae6a82683535/como_terminar_um_cubo_de_rubik_facil.pdf
    • https://uploads.strikinglycdn.com/files/2f6f0419-fe22-4b54-a433-6a0d99d7c7b8/list_of_cheer_moves_and_jumps.pdf
    • https://uploads.strikinglycdn.com/files/4f6dc159-bcb3-45cc-8080-3b4281c382f7/34403976893.pdf
    • https://uploads.strikinglycdn.com/files/c6df1898-f95f-41fd-968d-f64888f5107a/perfect_health_diet_jaminet.pdf
    • https://uploads.strikinglycdn.com/files/e10e55cd-61cf-4492-b706-c43e5743d6d3/8897593371.pdf
    • https://uploads.strikinglycdn.com/files/eeda3a71-6089-4c2b-a556-fac2685f06b0/puboluposaminaveb.pdf
    • https://uploads.strikinglycdn.com/files/d031cf7b-f867-4491-982e-f5bbb95c077f/494279628.pdf
    • https://uploads.strikinglycdn.com/files/d5f16c37-da14-426d-a5fe-7023f7a05cb2/rekewikafewafelegenelu.pdf
    • https://uploads.strikinglycdn.com/files/b91520cf-445c-400b-8278-13fc55c75f1e/wepodelixegoranaleve.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d097.bin
c6a38b557e25ef330e10c4a250999f4350c4a45d4281913a6d16a615c7317316
pdf-font-stream PDF embedded font (sfnt) at offset 0xD097 5424 bytes
font_01_sfnt_off0000e324.bin
c0ac328baa62184c048ecbead8ed746ce38ab3a73df602689d4c56ec883d7c75
pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 10060 bytes