Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d68f945242d81a…

MALICIOUS

PDF

59.6 KB Created: 2020-11-17 17:32:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 39390df19d93ebea47636e987b5ab5e4 SHA-1: e65fa458a0e95a8078b24a33b162127c0f512e0d SHA-256: f7d68f945242d81a87dccf0a759b555e730f23bcffb440d52461c4ce100223e3
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to websites like 'traffset.ru' and Weebly-hosted PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=units+of+force+crossword PDF link annotation
    • https://wemijevasuwubo.weebly.com/uploads/1/3/4/7/134772416/takikiker.pdfIn PDF document text
    • https://solujokorox.weebly.com/uploads/1/3/4/1/134108712/5690654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5faf6dfa0ed5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f9c08988635c.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/e9b8426d-aa28-4881-a7bb-3d138b0060da/53826622480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d40ccf9-bace-409f-a116-d753120758af/79547793272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5081053-c4be-4138-a67f-2e057ef807d7/viper_remote_start_7146v_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c5337d3-71fd-4fff-bd7c-850f56eaa592/comfee_rice_cooker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64391b2c-aa6a-4667-b3d6-70a7850b2cb7/aa_key_west_fl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0e3294-8024-4987-afd6-d7c6c7adcb5d/boosie_badazz_songs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a188c68-32fb-44b6-9cf1-73be68934b60/super_mario_theme_song_alto_sax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e60874-f22b-496d-a2d8-3c9b09df20dc/26635099245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1e076e-bdbd-4a0b-92d3-ffa2d91210f6/mulebolaxidosoxogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5638e95-214c-409c-a697-1e0a56bd3f10/lokopil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ade59c2-d1ae-40ed-a0ae-084ed866a556/sezuwasupugulebor.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_off0000af72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF72 4856 bytes
SHA-256: 8d08c7aa74a45122d696ce70f73dd29ed2af4e9f7375d5a39db3967925e0564e
font_01_sfnt_off0000c01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01F 9900 bytes
SHA-256: caa4d36fe8a37db1e7e0dc6c983159eb34be50420258f5e12d3a839eefbb438c

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