Malicious PDF — malware analysis report

Static analysis result for SHA-256 7409133d07e512a3…

MALICIOUS

PDF

111.5 KB Created: 2021-03-02 01:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ecbb6250957417196c7ea3db9eaac1df SHA-1: 47b8a6d67a3ffce5ebe4963fdb2fc65ee03540e3 SHA-256: 7409133d07e512a325f5c4a8c5c93ebc50dedbc854f55a1c86ba8aa6bf3a1904
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to search results or informational content, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/123?utm_term=what+does+tom+sawyer+represent+in+huck+finn PDF link annotation
    • http://metazoaapc.fun/36667408554wed7i.pdfIn PDF document text
    • http://epaytds.xyz/barbie_cartoon_movies_in_tamil_free9qh83.pdfIn PDF document text
    • http://vuvuga.xyz/dictionary_cambridge_apkqeft6.pdfIn PDF document text
    • http://tibagisuminove.sportsontheweb.net/how_do_i_setup_my_straight_talk_phone_as_a_hotspot.pdfIn PDF document text
    • http://kinoogf.space/evermotion_archinteriors_vol_30alpio.pdfIn PDF document text
    • http://fitokapss.xyz/android_10_for_samsung_phones3b4cn.pdfIn PDF document text
    • http://pankreatitum.ru/nesoligawekawetefuxinuf1eejf.pdfIn PDF document text
    • http://boevoenlp.com/modern_history_of_nepalstwq7.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/windows_10_bash_python_command_not_found.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/guzimuzaruxidux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463300/normal_602432c6171e0.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/26183424535.pdfIn PDF document text
    • http://vovality.club/71942861551okeb.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/how_to_connect_2_jbl_flips.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuvujibirili.epizy.com/tilafanake.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/bujupuwesada.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/chatrapathi_movie_songs_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/mitekitoxipedisese.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/90043511766.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/peduxesexefaliguka.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B8A 3028 bytes
SHA-256: 6435fc191ebc38e881df1ca8ecc095919b73462573e702801a286c4c05f9da51
font_01_sfnt_off00017666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17666 5636 bytes
SHA-256: 2acde1d911c26b9615e02a68ee7b292d35cd1ffbfef0dbfb2971e90203438b19
font_02_sfnt_off0001898a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1898A 11328 bytes
SHA-256: 2044cd65667a3a331bf73c60ce3b8cbbbaaf244d2bba642ab31f90c308773957

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