Malicious PDF — malware analysis report

Static analysis result for SHA-256 81736012056a862b…

MALICIOUS

PDF

79.9 KB Created: 2021-04-04 02:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdd4c6f531ddd42799899db99e8c6880 SHA-1: 8ed1ea931c44f3af962b9b812ce32a5969f105f8 SHA-256: 81736012056a862b6ac2e45a80033948926dc8e6ab00e0b4c51e5dd8e2f3f57f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious URL, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, contains text related to the URL's apparent lure, suggesting an attempt to trick users into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/wix?keyword=the+witches+bible+pdf
    • https://xowimigijik.weebly.com/uploads/1/3/1/6/131637135/rolemifexedu.pdf
    • http://jotewelife.iblogger.org/pexenef.pdf
    • https://woliremokeg.weebly.com/uploads/1/3/4/3/134340334/vinipuvufa.pdf
    • https://talokawibameze.weebly.com/uploads/1/3/4/0/134000376/vafutagu_futimoxefufag_wizasenag.pdf
    • https://cdn.sqhk.co/gajalalike/c7ijmEY/adobe_creative_suite_2018.pdf
    • https://cdn.sqhk.co/zenetofuma/0dyjhkp/nabefegepirebeze.pdf
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/taxemisojumovov.pdf
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/873ce23132cf68.pdf
    • https://cdn.sqhk.co/vubiwete/uugcXsZ/letolujevogekarejawu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/8a65f9c7-bf32-4f77-9682-c8d8927ddab2/xebov.pdf
    • http://xegewir.epizy.com/ipcc_climate_change_report_2007.pdf
    • http://xugonowelimije.epizy.com/novebogakatosizadurevenup.pdf
    • https://uploads.strikinglycdn.com/files/e159f72d-b32d-4bc0-bc46-0c98d50de4b0/troy_bilt_pressure_washer_water_pump_replacement.pdf
    • https://uploads.strikinglycdn.com/files/69a927e6-9bf4-456b-884c-2dbf3e633c66/ai_vs_machine_learning_vs_deep_learning_ppt.pdf
    • https://s3.amazonaws.com/setaxilitozuko/ahpra_psychology_registrar_program_progress_report.pdf
    • https://s3.amazonaws.com/doxifuba/54594264088.pdf
    • https://s3.amazonaws.com/didowugorokirug/34211838041.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_off0000ee7b.bin
42c83e9025e72ee76f7c9340a74b260979336dee74b0e525c1ae036f78aa9e30
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7B 4688 bytes
font_01_sfnt_off0000fe87.bin
ba7f669832bf16a46bc8278fdb95b29f95075babd2a7e634ec5d9319fc3912ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE87 11344 bytes
font_02_sfnt_off000124f4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x124F4 4324 bytes