Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ec04db44a3d2a5…

MALICIOUS

PDF

67.8 KB Created: 2020-12-15 11:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 894f965ac09b1d8fead639d0c0618195 SHA-1: 8d4330fe239a7fa0f9d19d87bd4c4289c278bdc2 SHA-256: c3ec04db44a3d2a5a7da8a7865f67942a71647694a9dd58290c0542e9d5ffadf
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a heuristic firing for a PDF SEO UTM redirector link, specifically pointing to 'https://trafffe.ru/123?utm_term=crescent+beach+neighborhood+association'. This suggests the document is designed as a phishing lure, likely attempting to trick users into visiting the malicious URL under the guise of information related to a neighborhood association.

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://trafffe.ru/123?utm_term=crescent+beach+neighborhood+association PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/simple_audio_amplifier_circuit_diagram.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c4d3c30a162e0c73ef94/t/5fce4706f94b6402b24845b1/1607354119793/wozujijujomumi.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/50608205640.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/86428353244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d66a9bfb-372a-4020-9b6a-fb381a432a31/menogimuval.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/lab_attendant_answer_key_morning_session.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe10b9e2-5c3d-4af3-9ede-b0bedef36f1d/43680655606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d51ba7-5a76-4c24-8341-0f04e8f4a758/vukix.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/90231619262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee70aae-5426-46c7-9205-1bc39f6abf8b/fatamowovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60cf3f57-f77e-471b-8332-8c6504be9c17/98861973760.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aa4c27a199023ac0c258/t/5fc4fd133570fb44d19fbda7/1606745363953/adguard_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/27400039580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/652bfa3b-b283-4dd9-9c57-b402d3227947/limivikaxupukel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b923b7ea-9589-4baa-8e1e-f59cbce43117/28976158259.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_off0000cca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA4 5212 bytes
SHA-256: baf290a103e436d9d180440da757b23fa061d269ffebf6758e1e4507dcab4f4c
font_01_sfnt_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 10456 bytes
SHA-256: a11388ccc7c7440700d26f55b12fb38485f0e753debd2f36376fd8d2b33d9fb9

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