Malicious PDF — malware analysis report

Static analysis result for SHA-256 0922ca6c002f9603…

MALICIOUS

PDF

72.8 KB Created: 2021-03-11 16:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8bac7f283925485d0ee12e26daafc34 SHA-1: 592119f36b51a6be2c331ce978beb05d0fc45942 SHA-256: 0922ca6c002f9603904157af20e42ce415213c56d7dd76075c1bda484b7046e7
96 Risk Score

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 high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect the user to a phishing site. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware delivery attempt.

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://mezovuduw.ru/wix?keyword=dot+and+cross+diagrams+are+used+to+represent+ionic+compounds
    • https://cdn.sqhk.co/dajuzafum/K3EghCP/rikiz.pdf
    • https://cdn.sqhk.co/polidupokasu/hagiZ0e/23209461172.pdf
    • https://cdn.sqhk.co/xasurila/ignQVuS/buxeguvokopim.pdf
    • https://cdn.sqhk.co/bamebuxi/cFUghhh/roseximixodumewivezu.pdf
    • https://cdn.sqhk.co/rizakumer/Yqvhgie/87390405916.pdf
    • https://cdn.sqhk.co/liminekaj/4jg78ge/milk_factory_meaning.pdf
    • https://cdn.sqhk.co/suwajipufo/jQz2aie/disewesemosa.pdf
    • https://cdn.sqhk.co/zupodejadofe/hbSy2ha/85825583439.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bisapovepizaj/rediwotusa.pdf
    • https://uploads.strikinglycdn.com/files/535a0cc5-2f82-4055-a010-eb2ec3558cf3/33155880695.pdf
    • https://uploads.strikinglycdn.com/files/4c080ae8-e1d5-4957-84e2-5c3d2f72724a/75687170087.pdf
    • https://uploads.strikinglycdn.com/files/25c05ecf-c665-4ee6-bb59-58657a0c7fc3/koresuramedijugag.pdf
    • https://s3.amazonaws.com/kagedatabujo/11473814770.pdf
    • https://uploads.strikinglycdn.com/files/1b2b8cf8-ed53-4a6e-8602-9629e7d9aa1c/fexesuwuniputunag.pdf
    • https://uploads.strikinglycdn.com/files/7968596c-7116-4110-b749-c16117e7d6b2/the_guide_to_getting_it_on_kindle.pdf
    • https://uploads.strikinglycdn.com/files/3e22574a-3078-4b5c-bc92-07ba5b922345/vutejawowiga.pdf
    • https://uploads.strikinglycdn.com/files/445e85d8-5929-461b-a5a5-06f119cb2ebc/48679383611.pdf
    • https://uploads.strikinglycdn.com/files/9bfa4bb7-25f0-4514-9144-34df675b47d6/samsung_tv_audio_out_pcm_or_dolby_digital.pdf
    • https://uploads.strikinglycdn.com/files/9d6bbc05-1ac9-418f-b53b-a21c3d89a236/nexesiwimixefote.pdf
    • https://uploads.strikinglycdn.com/files/6ef5fa81-421b-497a-a93e-e2564c074846/selling_for_dummies_audiobook.pdf
    • https://uploads.strikinglycdn.com/files/dd781fda-4371-411d-85e9-914d0b315c07/nunuxebenixetuzip.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_off0000e0ac.bin
097d4f8f4702e54e07014993ff60962b1cdc33ed644bc26fe019149b7395aa79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AC 5360 bytes
font_01_sfnt_off0000f2da.bin
f8a5f5ee2f11f0c5e236d0d8a6f1684ae6f3331a95890cc433cb5aa7fef2ab01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DA 10124 bytes

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