Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d44baa228d92123…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 02:23:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0ad9bfc57557a94d5de8352f09af1fde SHA-1: 0bfc696747e1c277e046112b71d282f8864a705c SHA-256: 5d44baa228d92123aaa135490097f0a47894c193956c52f99fd6b2e65a7f8da0
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. The embedded URI `https://soxebez.ru/wix?keyword=troy+bilt+bronco+parts+manual` is suspicious and likely leads to a phishing or malware download page. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically to appear as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=troy+bilt+bronco+parts+manual PDF link annotation
    • https://cdn.sqhk.co/gexopoku/8FIihib/the_walking_dead_pc_game_2019.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/kolalaxom.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/71330412219.pdfIn PDF document text
    • http://wizapivizesib.mygamesonline.org/autodesk_revit_architecture_2020_essentials.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/bMjf0jd/75443305083.pdfIn PDF document text
    • http://wasodez.22web.org/kuxujipanexofupaja.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/fijdShe/a_furia_dos_titas_2_filme_completo_dublado.pdfIn PDF document text
    • https://ludalobupum.weebly.com/uploads/1/3/4/5/134528654/mevanowimew.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/ji5ibuF/79797165272.pdfIn PDF document text
    • http://jesopejasunu.22web.org/51907951745.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujebik.atwebpages.com/25787518562.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/metro_2033_redux_library_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/chapter_18_chemical_equilibrium_worksheet_answers.pdfIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_3890574a82ae4dd7b65dc53af9f3825d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/judexos.pdfIn PDF document text
    • https://5c3e38fa-bf2d-4cda-bfdc-19e9a39f2227.filesusr.com/ugd/b3ada4_3fe0827f1add43eeb540236bb98f11fd.pdf?index=trueIn PDF document text
    • http://zimadiwiv.rf.gd/central_pneumatic_sandblaster_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/muleziwuximolobepegolerif.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/degiwikuxilu.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_dcdecf59a3ff4223a1dcbf67c537f9cf.pdf?index=trueIn PDF document text
    • http://sozidimimu.rf.gd/how_to_do_an_interview_spread_tarot.pdfIn PDF document text
    • http://kelovikaxovixu.epizy.com/what_time_does_the_stock_market_open_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/how_to_clean_a_viking_stove_top_griddle.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_off0000ecde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDE 5268 bytes
SHA-256: 7694e8a05e20f2d08c4c74cf438676b65371b7d6e3f6edc582d4f309835d5584
font_01_sfnt_off0000feb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB9 10836 bytes
SHA-256: 47e3dcb5394928427292be500e9ae9dfbf6f63e91c1e8815cf12f8a25ee444f2

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