Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc2851e5b3f7b67…

MALICIOUS

PDF

70.9 KB Created: 2021-03-20 02:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19308cd50c8f0f362454680fe00e4abf SHA-1: e4c12c40b5305bb58f0bc26da5ce7159bd5716c4 SHA-256: 4cc2851e5b3f7b67c735c13b9cdd2e99fd542163d47c7e74c909481f002ed03c
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=hamilton+beach+stay+n+go+manual', suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

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://zajinet.ru/wix?keyword=hamilton+beach+stay+n+go+manual
    • http://visodesux.iblogger.org/adeste_fideles_score.pdf
    • http://makamar.online/gpo_deposit_account_form_4045w4fhx.pdf
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/7649750.pdf
    • http://ferobuxanax.iblogger.org/buletijolobuzogudijaxu.pdf
    • http://vobarijijagurar.22web.org/15541456288.pdf
    • http://zuluwana.iblogger.org/wegekiwuwilonov.pdf
    • https://polopomix.weebly.com/uploads/1/3/4/8/134849819/gazutod-sebovuxu-sikuwotob.pdf
    • https://powigakiluxoja.weebly.com/uploads/1/3/4/5/134521341/0739e4.pdf
    • http://kernig.store/nulip7fkgo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://netixino.epizy.com/56744675632.pdf
    • http://tabotego.epizy.com/31376925949.pdf
    • http://gukupexokopiwug.epizy.com/zazelebuvi.pdf
    • https://uploads.strikinglycdn.com/files/282956c6-391c-4867-9aa5-e52a77266115/bionaire_ultrasonic_humidifier_bul2612.pdf
    • http://nasakitubaribud.rf.gd/ankylosaurus_facts_sheet.pdf
    • https://uploads.strikinglycdn.com/files/dd497949-136f-4c39-b430-90429f5ba552/jeu_de_cartes_a_32.pdf
    • https://s3.amazonaws.com/bisapovepizaj/amcas_letter_writer_guidelines.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6c7.bin
8ad3b7ca2900004a21f7d34769242cdc376fb99e777d5186dc22a525cbbb9c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C7 5320 bytes
font_01_sfnt_off0000e8c4.bin
a8c357ef5bdb0a16785fa192cbb6deccedcce193769ddadb96a100ee206e2d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 11084 bytes

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