Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7def0340497f56…

MALICIOUS

PDF

69.9 KB Created: 2020-11-29 19:58:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1833814db4b4108e9057ce481e2ca64f SHA-1: 4226914960128a58182c590aeb53582523cb0630 SHA-256: 9b7def0340497f5641f33868fa9af117364d1c8033b90f3c57a95b76027a999c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, appears to contain references to a game or entertainment link, suggesting a lure for initial user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/123?utm_term=cat+ninja+run+unblocked
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nitidadufetenu/creep_radiohead_piano_chords.pdf
    • https://s3.amazonaws.com/sigobija/16188601647.pdf
    • https://uploads.strikinglycdn.com/files/7c41e243-6807-49b7-bafa-d7f44dff2237/32248083748.pdf
    • https://s3.amazonaws.com/fulazelof/10704429440.pdf
    • https://s3.amazonaws.com/tosasugokod/liability_of_the_six_sigma_process_ssd1.pdf
    • https://uploads.strikinglycdn.com/files/6174432b-0fc4-4a6a-aa90-790da8264cad/cross_cultural_competence_in_education.pdf
    • https://s3.amazonaws.com/kosamupim/androidx_navigation_drawer_dependency.pdf
    • https://s3.amazonaws.com/zetare/nevosubezirasosunexazoda.pdf
    • https://uploads.strikinglycdn.com/files/8fa62f5d-1b4d-4155-8a4a-40319cd05359/bella_coffee_maker_manual.pdf
    • https://uploads.strikinglycdn.com/files/f8d5df35-3352-408c-b1d5-8f119a5175d5/71055442014.pdf
    • https://s3.amazonaws.com/webipejonavuv/2844975282.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c335.bin
1cb19b01f4d72923a6c0f3f5331ba7c569ed63af950942dd9bbb1d4f5d13d4d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC335 4940 bytes
font_01_sfnt_off0000d408.bin
f2850bc557204a49dc23d2ef6d707a99de441f223da287e42283435251b9611f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD408 12700 bytes
font_02_sfnt_off0000fca3.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA3 4324 bytes

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