Malicious PDF — malware analysis report

Static analysis result for SHA-256 941014000cb82119…

MALICIOUS

PDF

70.4 KB Created: 2021-01-20 10:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 3e2228d6b69179e4cdccc564ea1aa068 SHA-1: de6079eba5fba17d03f22109e2445c8abf2977f5 SHA-256: 941014000cb821197179a34a992faf6eb1cf71a386603c8d8dc8564569df860e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous external links, many of which appear to be part of an SEO link farm designed to redirect users to potentially malicious sites. The presence of a critical heuristic firing for PDF_SEO_LINK_FARM and a high confidence ML detection strongly indicates malicious intent. While no scripts were extracted, the document's structure and link farm suggest it is used to drive traffic to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=best%20vegan%20gluten%20free%20lemon%20cake%20recipe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5f9671dbeaf48.pdfIn PDF document text
    • https://xuwomiber.weebly.com/uploads/1/3/0/9/130969046/koxororewo-jugunaje-tudumawovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f96c51d5b1fa.pdfIn PDF document text
    • https://kenoduzuran.weebly.com/uploads/1/3/5/3/135350653/rexatuxula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_5fbd9b92133cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447101/normal_5fb2573f47b35.pdfIn PDF document text
    • https://cdn.sqhk.co/jigixomavola/jgEsigO/world_top_10_sports_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5fc14c0abb5fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473039/normal_5fd7f0fdd350f.pdfIn PDF document text
    • https://wovitinukid.weebly.com/uploads/1/3/4/3/134372120/pijibi_kepavu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f89825318c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453337/normal_5fd3ba6f7cd08.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/anEmiac/super_silver_the_hedgehog_card.pdfIn PDF document text
    • https://rubitolagaju.weebly.com/uploads/1/3/5/3/135330326/viwagexezivole.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/dRiageP/zombie_shooting_games_dead_city_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kevava/69250542142.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/ace_stream_on_sony_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/41603816693.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/grossman_lumber_reported_102_000.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_off0000d597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD597 5508 bytes
SHA-256: 9b8d4d5d2393cb8cde7ac3bb7615910fdd37d5e906ec9d828426527e812f30e6
font_01_sfnt_off0000e855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE855 10612 bytes
SHA-256: a5afe8bb7352d1463cff27e52c1f7b87af267c5891c1e8acbcdeb9e40a8a4e82

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