Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6474658b24b534…

MALICIOUS

PDF

82.1 KB Created: 2021-03-26 11:13:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48f4630f6c427639526182a9bbc67c59 SHA-1: 78a30241387fd677745a27b647afaa0c761996be SHA-256: 3f6474658b24b534ff05ecdb12b964ad2d7f7687ef6f88607d2e55b41f0f50e7
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or scamming purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=we+buy+cars+without+title+near+me
    • https://cdn.sqhk.co/dabekojov/ibNfxji/difaje.pdf
    • https://cdn.sqhk.co/jotenitix/Liidhbd/equalizer_proton_pen_precio_colombia.pdf
    • https://static.s123-cdn-static.com/uploads/4478393/normal_5fcd704bc1887.pdf
    • https://cdn-cms.f-static.net/uploads/4387240/normal_60241ceaec2c3.pdf
    • https://cdn.sqhk.co/xadopazo/mdicge3/pabewaf.pdf
    • https://cdn-cms.f-static.net/uploads/4494661/normal_60247127493af.pdf
    • https://cdn.sqhk.co/jabupexipa/a1mjgKP/sodegibediviro.pdf
    • https://cdn.sqhk.co/kevapaboxer/jiaibhg/rejisutesixigikejevolej.pdf
    • https://static.s123-cdn-static.com/uploads/4478951/normal_6005e18ca6a20.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dutataratoboruj.rf.gd/kekodolinaj.pdf
    • http://fatufad.rf.gd/banquet_function_and_catering_management.pdf
    • https://s3.amazonaws.com/megelugik/avengers_theme_kazoo_sheet_music.pdf
    • https://f18b8dc1-3ce9-44bd-8712-01435d039869.filesusr.com/ugd/b97cba_b96492804bac4b66a2817038562bf82e.pdf?index=true
    • https://b1b0174c-961c-4936-87f6-765e1132391e.filesusr.com/ugd/6cf804_b71ec2f1243c4b0793966d1a52915225.pdf?index=true
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_e15e838a685741f596bc6fb5d49b9a01.pdf?index=true
    • https://13a2bf7a-7930-4518-a7e6-737bf3c0aa4f.filesusr.com/ugd/f5c1a0_e565c6d70461403d82dd2bd56ddb6ee9.pdf?index=true
    • https://s3.amazonaws.com/batoragubukepo/how_to_change_a_washing_machine_drum_seal.pdf
    • http://juxenemijoguku.rf.gd/87640851272.pdf
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_f862c17183cb4dcc8f6310e895a4b253.pdf?index=true
    • http://sasilefup.rf.gd/nail_salons_open_on_sunday_in_birmingham.pdf
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_6664711db1eb4512ae0cdd437aae1e85.pdf?index=true
    • https://64f1e6a9-4530-4009-9f9b-67b91dd69f79.filesusr.com/ugd/76b6de_4096638380b241968b0f5400158b637e.pdf?index=true
    • 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_off0000ea06.bin
6b45383efbab6c907db5846f6f6278d1354e35a47c14c51e267fc5ca0ce87eb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA06 7232 bytes
font_01_sfnt_off00010268.bin
3084f1b4f9572217d168385719787795daca2b3a774fdca2bcc3d4e97d935b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10268 5388 bytes
font_02_sfnt_off000114a8.bin
cd27c9569202b52f37eacbce0bee186312e3a74f7596e7c62b221f73fb89672d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114A8 11048 bytes

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