Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea7c0400e6b6f00…

MALICIOUS

PDF

67.5 KB Created: 2020-11-28 21:25:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1eeed08b7c57449a1e311c33cf8e7226 SHA-1: 6ca213080fa698966903e163fba14eaa28f3ba67 SHA-256: fea7c0400e6b6f00013f26fde893906ca87253755b0c437102c2b76c3c58c676
244 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable hosting and redirector services, indicating a link farm or phishing attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a link to 'traffking.ru', suggesting malicious intent. The ML classifier and ClamAV detection further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/strik?utm_term=computing+character+code In PDF document text
    • https://ponopuxebi.weebly.com/uploads/1/3/4/3/134365602/batadazana_zaxumizage.pdfIn PDF document text
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/92813231f53a4f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488580/normal_5fb8b76b15c51.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/zokonifekom_gudov_desazatugi_zilutofil.pdfIn PDF document text
    • https://fixabugodorev.weebly.com/uploads/1/3/1/8/131856934/452711.pdfIn PDF document text
    • https://nasolebad.weebly.com/uploads/1/3/4/6/134695036/tewinakana-gawobas.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/penajomamuw_sakoxulon_fasevi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f89c47f0dba5.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/1e66b57a-3101-4bb5-a5b8-f866e7fa8b99/best_ps3_controller_on_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/petizakupen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56feddf0-8284-453f-bba4-591ac038d8e2/9944553627.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_off0000cc7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7F 5180 bytes
SHA-256: eb29040991f7fab5e39453758b84e095c4f583d51b5557ac381fbe253ba5a3ca
font_01_sfnt_off0000ddf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF0 10492 bytes
SHA-256: 0409f19358caa95e802c7245755d38ad8f0655fa499cc24566587e32252a13d7

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