Malicious PDF — malware analysis report

Static analysis result for SHA-256 8102054cf6caffcb…

MALICIOUS

PDF

86.1 KB Created: 2021-03-26 08:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e8e5815a6d0720a3b842afab79ed92 SHA-1: 1b387b40d0f98b4f6dd26e36f0a5d36e3ba6c3e3 SHA-256: 8102054cf6caffcb9417c5ba3fb028fbf55f2cf1d01f5ef3027df4addc357f18
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to digital painting tutorials to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=digital+painting+tutorial+photoshop+pdf
    • http://evatopshop.xyz/owners_corporation_model_rulesnxib4.pdf
    • https://static.s123-cdn-static.com/uploads/4401972/normal_5ff40e401c296.pdf
    • http://xewitanajudozu.iblogger.org/muxadirinidagolutobujela.pdf
    • https://volifutizur.weebly.com/uploads/1/3/4/6/134602954/4f269cabc2.pdf
    • http://naturmilans.fun/binomutusubecqrvp.pdf
    • https://cdn-cms.f-static.net/uploads/4422180/normal_60137846341e0.pdf
    • http://fallofelin.online/auditor_general_report_2020_ghana32hp3.pdf
    • https://cdn-cms.f-static.net/uploads/4476765/normal_6025f999364b3.pdf
    • https://kawuwulaf.weebly.com/uploads/1/3/3/9/133987507/gatasedo.pdf
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/284cc6d782fbf73.pdf
    • http://topsol.xyz/how_do_i_change_the_name_on_my_toshiba_office_phone_dp5022v50ce.pdf
    • https://bebejumupetokox.weebly.com/uploads/1/3/4/5/134513190/b57e2a4b616094.pdf
    • https://cdn-cms.f-static.net/uploads/4366989/normal_6026e6c795318.pdf
    • https://cdn-cms.f-static.net/uploads/4384836/normal_602b6f9ad5e5d.pdf
    • http://ompala.store/investigating_the_legion_guidezg1fn.pdf
    • https://wozepunelom.weebly.com/uploads/1/3/5/9/135993859/6989516.pdf
    • https://texatejoluneb.weebly.com/uploads/1/3/5/3/135318687/nofezovadubewarugu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pilisabewagedix.epizy.com/leather_computer_bag_for_17_inch_laptop.pdf
    • http://pidisoxoxaxar.rf.gd/beautiful_disaster_read_online_travis_and_abby.pdf
    • https://uploads.strikinglycdn.com/files/edc805d6-5ae7-4122-8a7d-7cf29567597e/creating_a_flowchart_in_word_or_excel.pdf
    • https://uploads.strikinglycdn.com/files/2894b88f-8d65-464a-ab0d-e780f132c230/tugubewukodafepomiwu.pdf
    • http://butexageteril.rf.gd/esl_body_parts_exercises.pdf
    • http://vesudakovufif.rf.gd/45775935623.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001074b.bin
5383d84297f7204a6a153980d8fd14051068968493754434d9f7958c3dd19e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1074B 5064 bytes
font_01_sfnt_off00011870.bin
0ff979b1c18172e406226892c7a4d5a6c22caf752fd2383681803858ea2c8923		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11870 10676 bytes
font_02_sfnt_off00013cec.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CEC 4324 bytes

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