Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe2d0bd192accd3…

MALICIOUS

PDF

58.8 KB Created: 2020-12-15 23:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3beccdb9da94acc98f1f1741dd9b3e0a SHA-1: ed87a65aff0f914bcdd856f48169e655198bcf6d SHA-256: 8fe2d0bd192accd37f8c940a6f37cbf79ed6dd5638baadde60426263cc28f7aa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific ClamAV detection name indicating it's a phishing trojan. An external URI pointing to 'traffking.ru' was extracted, suggesting a redirection to a malicious site. Although no scripts were directly extracted, the PDF structure and the presence of external links are common in phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/123?utm_term=speed+of+light+and+sound+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402721/normal_5fa6d00120c3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5f96110240b9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc65c44d49dd1244759b117/t/5fcc65f11e1a4d7de121ddd8/1607230968202/jatilizoxolabidaxivowoneb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00ed8539-4667-47f8-958a-e3ee0f5a2b3f/guidance_approach_in_action.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10dd611f6a419848684c6/t/5fc65b5608845d092463e272/1606835031298/beholder_2_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/38480132584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28dc8af9-881c-4f43-a499-b90e9a6455fe/aeronautical_information_publication.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc527e6403f5353fdb14542/t/5fcbb5a6bce7087d1ae3c772/1607185830967/top_goal_scorer_2019_20_in_all_competitions.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/monsoon_theme_kitty_party_games_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a46f2da0933358956f6f/t/5fca0954856278751760cdc2/1607076181518/redeem_flixster_code_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/research_essay_outline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/free_jamaican_cookbook_download.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_off0000ac80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC80 5560 bytes
SHA-256: d8eaaf4f33144957aa17cd4f09033ed524e8d0c16f13c1979781772e469fa72e
font_01_sfnt_off0000bf75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF75 9216 bytes
SHA-256: 7929c1aff1d47b6aed67ea37d30196368cee423257d6438783f94415b3336df8

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