Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa50f2d67172974…

MALICIOUS

PDF

99.9 KB Created: 2021-03-01 03:56:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a08a4eba2c0dea6a4ad127abaf495a83 SHA-1: 5a3a9dcb1070291b692192591a296effb49b35a8 SHA-256: 3fa50f2d6717297435676a3df8d1dfb2a0ef1740430a46729db7f5a597b3d17f
96 Risk Score

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 0.9996

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://kuzutuzo.ru/123?utm_term=airspace+classes+sectional+chart PDF link annotation
    • http://sport-stavki.fun/kajozifomonefakumiluzeks8sq2.pdfIn PDF document text
    • https://cdn.sqhk.co/fezavomol/iighB57/itarget_pro_vs_laserhit.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/i8IbjaZ/53187348210.pdfIn PDF document text
    • https://cdn.sqhk.co/puzokopu/heP9bLH/18721804108.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/ajdxBia/typhoon_tm038_vr-_space_3d_glasses.pdfIn PDF document text
    • https://cdn.sqhk.co/wujejelot/iijiijR/easy_buttercream_icing_cake_decorating.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/KjbrDbr/zombie_sniper_hunter_2_the_last_apocalypse_warrior.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/gg4pgcb/fimasoralomomowamug.pdfIn PDF document text
    • https://cdn.sqhk.co/fasuzozo/ij3vShc/crowdsourcing_websites_crossword.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/jpjagfR/1180173604.pdfIn PDF document text
    • http://energytik.net/dhet_bursary_application_forms_201919sil.pdfIn PDF document text
    • http://figupatofewox.iblogger.org/antigone_holt_mcdougal.pdfIn PDF document text
    • http://puwonasomoso.22web.org/xutirisaveresewedezopef.pdfIn PDF document text
    • http://wowitaly.pro/rafugivizozogegizacs8np.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lixuzo/walmart_huffy_bike_26_inch.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/safety_data_sheet_ethanol_alcohol.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/99655070980.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1C 6444 bytes
SHA-256: ad75a3fb8d1a324d763a8c82389a3e2a9dd8a8c9b196c984c145fe147615345f
font_01_sfnt_off00013d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D0E 4796 bytes
SHA-256: c39c4b91633d67febac8b3b08cbdb3722eb009469cfd4642060d690648384e68
font_02_sfnt_off00014d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D37 11356 bytes
SHA-256: 48e69aef3cfa06c9bb40d83165690eae90969d5f6d3d5775c7be90a530dc8352
font_03_sfnt_off000173de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173DE 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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