Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa9c4d30af3167d…

MALICIOUS

PDF

66.8 KB Created: 2021-03-11 23:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad7e2c6685222259dc17097baa5073ca SHA-1: 1930399c8b832dd2e1592d92c640b16e9aabdade SHA-256: 3fa9c4d30af3167d718b3f1a5e6aa813ba07a552f51026035a3c68dffb5dc497
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support its malicious nature. The primary IOC is the external URI used for redirection, which is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/123?utm_term=lagu+hanya+rindu+andmesh+kamaleng+stafaband PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423188/normal_6041ad43da066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60214b6d35180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481985/normal_5fd1585278ddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5fe66299c8fee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_600aa8142e62d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462036/normal_601b02636f4e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375204/normal_5ffa1e07377dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_600120c450caa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450158/normal_602809db0a889.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/560355bb-c1f9-41cf-a8bd-02d9bee07354/fomazuxobaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f6f418f-fb9c-44dc-9cf4-10c29ec7f040/vuvowejutefekuxelopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3ca2fc-3e0c-49cd-9f54-d0e750bea7ba/71136864592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3afcdc27-51eb-4c3e-969b-0d183069b94a/gujagubaxikijuforinirugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64b8c49d-856f-42d8-9a39-0218943a3fb2/sat_subject_test_score_distribution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f73a8ca-e99a-42b1-aa8d-641175e87cd9/tratamiento_anticoagulante_para_trombosis_venosa_profunda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c905e49e-2dcc-460e-bf92-c3fd11714bfd/vikasuridejoluvexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd903ca9-477e-4c6e-b579-2f7c2305059e/63570650153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fec59ff-674f-4c5e-bc51-ab5b433a8a4b/waterpik_water_flosser_cordless_express_review.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A5 5568 bytes
SHA-256: 05da92a52bdebb870c1844aa258f5e6941c8418eae4f7ab4e5bcd971a007546c
font_01_sfnt_off0000da79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA79 10408 bytes
SHA-256: f2a6be8e193b85a87f951efe82e6571fb1c8d4872ca7adfa60c68810984464ca

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