Malicious PDF — malware analysis report

Static analysis result for SHA-256 b243d766b4cf6667…

MALICIOUS

PDF

32.0 KB Created: 2020-11-09 15:13:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 669c4bca8dd74a611a8da5a1a1f455d8 SHA-1: dd05a35dfbcaa39978e236a70b10cd78dd27104a SHA-256: b243d766b4cf66672178c3cfaa4b717382aa33906d9d859500e05198d6b77306
122 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, https://traffking.ru/123?keyword=destination+host+unreachable+ping+linux, is flagged as a known malicious redirector. The document body also contains this URL, suggesting it is the primary lure. The presence of multiple links on disposable hosting further supports a malicious intent, likely to lead the user to a phishing site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 3

  • 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 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.
  • 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/123?keyword=destination+host+unreachable+ping+linux In PDF document text
    • https://dibekepoxifepef.weebly.com/uploads/1/3/4/5/134587143/naroxewolonepa.pdfIn PDF document text
    • https://xifamileg.weebly.com/uploads/1/3/4/6/134687686/c3b81b1accca18.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/5ab305.pdfIn PDF document text
    • https://sorimuzumetig.weebly.com/uploads/1/3/4/5/134519591/3222013.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/7250269.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/776913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a69c7d13-349b-47d2-b392-3f8168542f98/lojulasiravirijebezitiwid.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/bisaxurowaruni.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/58385980816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/118b9cd8-0bb7-4ac2-8f1a-e6800f85d244/how_to_play_gamecube_games_on_wii_usb_loader_gx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a33738c-5bb5-48ef-9326-0535fae0642c/fanatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a37c4d-4e1d-4b04-9933-a48279be76f7/golamakilufarapikaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7b3dab-932d-4f13-9d3b-c19f5d6b46e1/daxem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72a76f2c-44f7-487b-abd3-026beef26c5e/adobe_acrobat_xi_pro_11.0.0_serial_k.pdfIn PDF document text

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