Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afb2cf214dfcb0f…

MALICIOUS

PDF

86.1 KB Created: 2021-03-13 22:23:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c33aeb221896f017038cb64187c4fc1e SHA-1: dd67d09e84fa8ba369525e6204e4ea4f1aa163c6 SHA-256: 0afb2cf214dfcb0f5954fe25850f485017449f6c5f5c23d9c6273e71cec2d33c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or visiting a phishing page. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/award?keyword=beethoven+pathetique+1st+movement+pdf
    • http://lazadacostumercenter.com/27550770725iqdvt.pdf
    • http://loveworld.club/disukununijorazunijafikh60l8.pdf
    • http://lukiduxipapep.mywebcommunity.org/gunodusujabavipisudatak.pdf
    • http://goodnatural.space/best_android_games_to_compete_with_friendsk5k46.pdf
    • http://datingsexchat.site/how_to_reset_gopro_hero_3_to_factory_settingsmwj0o.pdf
    • http://55571.ru/72931608947cqx4h.pdf
    • http://zimezobot.getenjoyment.net/alive_piers_paul_read_quotes.pdf
    • http://nibelv.xyz/9658950023jtj5e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pezefaxovojole.atwebpages.com/83974669955.pdf
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_9b8b3642758b4ac6a5500039cba6a7f9.pdf?index=true
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_3ba29c89e065425a94ea8d34c27fcc7c.pdf?index=true
    • https://s3.amazonaws.com/tamobalasu/adolescent_development_book.pdf
    • https://s3.amazonaws.com/fulosobezur/timex_cr2016_cell_wr30m_stainless_steel_back.pdf
    • https://s3.amazonaws.com/gazivemon/29284212488.pdf
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_0ac1767a2f6344b68be2bcd644c85aec.pdf?index=true
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_dc52586dbd7746c09d9b6e7db9b91258.pdf?index=true
    • https://s3.amazonaws.com/bojafazes/52847171754.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efaf.bin
eb5311bac7b8c8f0ccf5624795b866dcd13e6dfb9cb48bcb4a591efa9f245371		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAF 5320 bytes
font_01_sfnt_off000101a8.bin
11b53ca18ac5ac116d6ae8b284ae8df60e3df815e5534be50e847296f56e8585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 11204 bytes
font_02_sfnt_off00012751.bin
73e2bae015806fcbcea00a5e77fef36cf57312733aebee32ba98308b5ce41d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12751 16120 bytes
font_03_sfnt_off00013c37.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C37 4324 bytes

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