Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdcdbaf598d69c1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 00:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3025dff045d17a27aa9696cbb7cf907e SHA-1: 75519a7174d728716bbad7171fa3ad26af76e562 SHA-256: 2bdcdbaf598d69c1d21600c9d2f1eecf79af5f7a413446b346ee00d0e38d8326
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, likely intended to redirect the user to a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan delivery mechanism. No scripts were extracted, but the presence of external URIs suggests the document is designed to lead the user to a compromised or malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=longman+academic+writing+series+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365570/normal_600eb5853a133.pdfIn PDF document text
    • https://rilewinip.weebly.com/uploads/1/3/5/9/135964764/9289286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485696/normal_5ff54fd3a53bf.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/o0UAgcO/84476130614.pdfIn PDF document text
    • https://xalanuxezofoki.weebly.com/uploads/1/3/4/3/134309931/widarixafudiwafitik.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/j6gjBPl/gabegadisisag.pdfIn PDF document text
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/xedij-buxuluzagarivit-fivubaxiw-fimibada.pdfIn PDF document text
    • http://urro-hu.com/nfc_14-_100y1cj8.pdfIn PDF document text
    • https://cdn.sqhk.co/parepejapoki/heR8ieG/tower_defense_game_online_free_play.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455673/normal_5ff02f5d080e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fc69e24b8794.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417039/normal_5fcd8fcfec546.pdfIn PDF document text
    • http://republvinb.fun/resident_evil_6_capitulo_final_netflix0r6xs.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/76a01da967a1.pdfIn PDF document text
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/zojow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_60324d95261b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodudulu.epizy.com/origin_of_word_answerable.pdfIn PDF document text
    • http://fivemawafazixi.epizy.com/nazawexalawazufolovi.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_off0000d6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B7 5424 bytes
SHA-256: 5bd1d61a7629b67bc665d0f9b675947dd602d425b3e910c8f3a06f4e3dfb57c1
font_01_sfnt_off0000e925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE925 14324 bytes
SHA-256: ff519df3d95a53e67e77567dddb5dfbfbfaaab5dc135792a6cd979b284d31013

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