Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f38cd8a296cceb…

MALICIOUS

PDF

67.7 KB Created: 2020-11-09 20:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5a3a69e2e77e83a1055fd84e01ed89d2 SHA-1: 9050625bb8e22416095a5ed87ad75f656af78f22 SHA-256: 44f38cd8a296ccebb7b7dc4b3cf7f48f1cec0d33ebe6bdf0b2c6dfc3372bc219
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/123?keyword=urgent+care+policy+and+procedures+manual+free PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bikebuduvud/netgear_ac1600_router_r6260.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/46689652252.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/epdfshx_autocad_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/vogazagepebijoragedigaf.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/1825254187.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/kututajanosemotemo.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/blueprints_neurology_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/eight_nation_alliance_flag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/151d929d-0241-4129-ad05-897144747531/just_a_city_boy_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/online_games_sites_list.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/popetebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67583c6d-56fa-4943-9755-39dbbe88a00e/39296293358.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/salamanders_codex_supplement_vk.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/undertale_clicker_hacked.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_off0000cd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1D 5568 bytes
SHA-256: da933b87ddeee61396b7b4ea08b2c9126707d38760ff7aad60a524c39200ddc7
font_01_sfnt_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 9976 bytes
SHA-256: 12e261725d7d668914faed2e106b410ef981ff82905fcb722b39f0ec8cd99672

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