Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f1fc8fc23a776d…

MALICIOUS

PDF

86.7 KB Created: 2021-01-03 15:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0049832891c7f734bdc5169a6e6afca0 SHA-1: d551e768208f1b4674f65442e2e586effda331cc SHA-256: f0f1fc8fc23a776de9eb78b4281e621b0c11797c1c1f9758b6184419e94d83db
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a heuristic firing indicating it's a phishing lure that redirects to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL 'https://trafffe.ru/123?utm_term=dog+bite+sleeve+amazon' is the primary indicator of compromise, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/123?utm_term=dog+bite+sleeve+amazon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f8efc926f8ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_5fc025986bd39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405440/normal_5fbf038102647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479435/normal_5fd9d73c51d57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476780/normal_5fe5beff167b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f8960e33ddf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389804/normal_5f979f9f5fbe3.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/pulujolatepuv/ansible_tower_copy_job_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54b0048-96ce-481f-bb06-46a01f844d39/top_fnaf_animation_memes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766e468e-f079-40be-808e-712c1347045f/zijefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0438bf07-b17f-49a4-90e0-737ed32b1cbf/kawasaki_generator_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082fbd6c-ba15-4327-ac63-031fe3da4092/nemovogunojepare.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/data_analysis_using_sql_and_excel_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06bed93-8438-4eac-a5f1-baebad28f7d0/witcher_2_steam_achievements_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6d9073-45b2-4cd2-8273-f1f6da149056/hypnotic_pattern_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e10c459-5285-4718-8400-6c389a8032af/springtown_middle_school_football_schedule.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 1

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_off00011786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11786 5160 bytes
SHA-256: acc91c2b8fd40234a87d2dc065676a6c5d356b0d436308376df9324956f23aa8
font_01_sfnt_off0001291d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291D 10836 bytes
SHA-256: 499c09f0d118750e49b2a36506857faefce540cb7320ba251199f3812b2be62f

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