Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60b53529cbf6992…

MALICIOUS

PDF

76.9 KB Created: 2020-12-26 21:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: eb2023129b6f01e2de006b1bfb4f6c61 SHA-1: e2443fe12421331669a5733750d283a6c93a0da1 SHA-256: c60b53529cbf699268057d731b72c779ce1207fe965abe0efbef3f933c7137ae
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'traffset.ru', which is likely part of a phishing or scam campaign. The heuristic 'PDF_SEO_LINK_FARM' suggests the PDF is designed to host numerous external links, potentially for SEO manipulation or to distribute further malicious content.

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
  • 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.
  • 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=home+depot+water+cooler+pump PDF link annotation
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/bef411d8446508.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/ccc2c1bb-042e-448e-ba0d-7c8fcb039d1f/nifetiwusopid.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/english_learning_course_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/bihar_daroga_application_form_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16cea3f9-15bf-46a7-b51c-63a9753decc4/evenflo_titan_65_convertible_car_seat_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/xibibutawasupafisazu.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/sinavigumepisunokejo.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/syndrome_extrapyramidal_traitement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c643a3-f462-4b72-b454-755a04457773/3ds_max_vs_maya_for_games.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/mv_agusta_brutale_800_dragster_rr_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/kesaxujovaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/9726101312.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/pekefagaretimuk.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/dodge_challenger_2020_hellcat.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/25508016835.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_off0000f037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF037 5096 bytes
SHA-256: 1675ef79699c8e992e80b47906e6ccb919ed0ee3ef7ea2d82a0fa4f8effeaa34
font_01_sfnt_off00010182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10182 10828 bytes
SHA-256: dcf23011833acad883163cb6ee17c6d40dd0da620aec5a259186947a0d27d7e7

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