Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc836ef3341d0e2…

MALICIOUS

PDF

77.7 KB Created: 2021-02-25 08:56:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9a3f43ef1d53f518dffdb944fed34c2c SHA-1: 297d0522749c499a5ef59caa1983421d70105884 SHA-256: bfc836ef3341d0e237ce427b96e343b1fa75582622a23f12f14caef291125767
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that are flagged as malicious by heuristics and ClamAV. The document body, though heavily obfuscated, appears to be a lure related to vehicle maintenance, suggesting a phishing or social engineering attempt. The presence of multiple malicious URLs indicates a likely attempt to redirect the user to a compromised site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=what+kind+of+oil+does+a+2003+dodge+durango+take PDF link annotation
    • http://richteam.site/armory_v._delamirie9nllf.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/hj9ighj/63103154040.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/iiDiijj/radio_italy_live_concert.pdfIn PDF document text
    • http://robolab.one/47401103761op09s.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/nomafuzigirubo.pdfIn PDF document text
    • http://artemk.ru/diwonabulojilufadapelov1183w.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/4073170776.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/O1hffhi/packers_bears_predictions_winners_and_whiners.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/common_core_ela_standards_grade_5_writing.pdfIn PDF document text
    • http://xtreme-sport.ru/dasuwajupzc67z.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/12432617082.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/the_end_of_evangelion_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/puvaxijedoxururavejogaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/mopofaseminezonan.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/autism_fact_sheet_uk.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/nibozerimaju.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/equifax_data_breach_senate_report.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/47393192899.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/37306794467.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/85522252324.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_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 5684 bytes
SHA-256: febbd07edde5141c5a53fc1433e05cfad95c273e04cc5e3c9ef87eb14f5fd0c5
font_01_sfnt_off000101eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EB 11536 bytes
SHA-256: 2bfb846f1ccade13e24a59a5d8071910d1587f4be48be46e9e297791fd95d4d6

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