Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2302b4b2a246e52…

MALICIOUS

PDF

91.1 KB Created: 2021-03-28 14:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0b83e7cdd86eb457fffbf4dd35e3a45f SHA-1: 8c3d77dfd67c785d6c039c80d32d5d3a3832cd1b SHA-256: f2302b4b2a246e5202a2fbd24ba4a4cf037cd537954b6565b333054d4a96475f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=singer+9410+sewing+machine+manual PDF link annotation
    • http://umkatrade.ru/nenare8zids.pdfIn PDF document text
    • http://megatorg.ru/email_etiquette_questions_and_answerswsx2s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_6006a0910bf25.pdfIn PDF document text
    • http://metaleagle.ru/agile_software_development_methodology_processy7178.pdfIn PDF document text
    • https://cdn.sqhk.co/xamizine/OhgbhhM/london_to_surrey_bike_ride_2019_route.pdfIn PDF document text
    • http://degimoto.22web.org/georgia_bulldogs_2018_football_media_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/geiCfzg/77741467077.pdfIn PDF document text
    • http://mivetys.xyz/150140922881n9u3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486060/normal_5fe06d45c7958.pdfIn PDF document text
    • http://acupofjacob.com/bowflex_treadclimber_tc1000_usedio4x5.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/twIibia/16345554394.pdfIn PDF document text
    • http://tpdreport.com/beginner_arabic_alphabet_worksheets_printable229s9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453108/normal_6023ac5612d61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450502/normal_6006396b610c9.pdfIn PDF document text
    • http://mists.space/78295015541q62jg.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/miiiegi/kananupesuz.pdfIn PDF document text
    • http://blankid.ru/25843939644yeux6.pdfIn PDF document text
    • http://trastenmyqort.online/alone_together_sherry_turkle_quizletv6y5c.pdfIn PDF document text
    • http://kvrovk.xyz/navien_tankless_water_heater_240a_reviewsxpybu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://votarodajogagup.epizy.com/ktvu_2_news_reporters.pdfIn PDF document text
    • http://sisuraregimu.rf.gd/37344048244.pdfIn PDF document text
    • http://gedanenek.epizy.com/checkpoint_5600_firewall_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a9a36e-6e26-42c6-89bf-ef323128340b/how_much_does_a_director_of_quality_make.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6cf499-c192-4349-b4aa-da3fe32bb8ff/vokebupunixatewamatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f469888-d798-43b1-8886-ade91a8e531d/mrs_piggle_wiggle_book.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_off000124b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B9 5844 bytes
SHA-256: 54ac3d94927bef1b89c295f8ea7a20f96ff13ce0fe31db8b2ac12f63f094de09
font_01_sfnt_off00013893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13893 11132 bytes
SHA-256: 1754f267a68c7902a7ffe883b3178525dad5e790162b322a38ba356d4aa52800

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