Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d15234e1d72019b…

MALICIOUS

PDF

77.9 KB Created: 2021-05-19 06:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9e0d63432f61e19dd9690767551c9eb6 SHA-1: 589950cec3857f2f505c59c88ba1c0d6ce676c78 SHA-256: 1d15234e1d72019bf578c07f2fded60e4e5173abf6a6611cecc7973a898a6675
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to mimic search results for popular content. The primary URL, 'https://jumiwimov.ru/strik?utm_term=fast+and+furious+7+movie+download+in+hindi+hd+1080p', strongly suggests a lure for users seeking pirated media. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/strik?utm_term=fast+and+furious+7+movie+download+in+hindi+hd+1080p PDF link annotation
    • https://rinilevewabidu.weebly.com/uploads/1/3/1/3/131382630/1953833.pdfIn PDF document text
    • http://rajebamif.22web.org/43338087720.pdfIn PDF document text
    • http://lovelatu.iblogger.org/how_to_play_cello_suite_no.1.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/78d5d11d0.pdfIn PDF document text
    • http://diposiz.iblogger.org/kovibalaliwena.pdfIn PDF document text
    • http://kuwanusefunok.iblogger.org/2201171934.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimizisunope.epizy.com/boston_bruins_2020_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/javascript_date_utc_format_string.pdfIn PDF document text
    • http://xolijuvusuv.epizy.com/58901303546.pdfIn PDF document text
    • http://pavinudoj.epizy.com/fivunopemanilezidadu.pdfIn PDF document text
    • http://nulazuwob.rf.gd/33749158626.pdfIn PDF document text
    • http://bemijeranokawu.epizy.com/would_you_rather_funny_rude.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/24778428976.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/audience_reportage_jenifer.pdfIn PDF document text
    • http://wewepov.rf.gd/asvab_for_dummies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/how_to_replace_drive_belt_on_kenmore_washing_machine.pdfIn PDF document text
    • http://lalemifeluruka.epizy.com/finders_keepers_documentary_trailer.pdfIn PDF document text
    • http://jatojitax.rf.gd/sample_conclusion_physics_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/salario_da_policia_federal.pdfIn PDF document text
    • http://firotiz.epizy.com/gi8014_geographic_information_system.pdfIn PDF document text
    • http://kofadokajofej.epizy.com/homogeneous_differential_equation_solution.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_off0000f184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF184 5856 bytes
SHA-256: 7bd9219b83b342a7c5a07324f38e490148ea0f2485ea8c4d0a18d723abfc3ef2
font_01_sfnt_off00010567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10567 10756 bytes
SHA-256: 63cde0b052c0ab042a9ca061cbf56927260fc3cd7691eb9f214ab8a08026b309