Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60b8fb2d86cfbd7…

MALICIOUS

PDF

77.3 KB Created: 2021-03-16 06:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cca948633259cfcf4aede8247e4a4361 SHA-1: c3f0cf0150243ef193a70eb54c3f3b51f6059a99 SHA-256: e60b8fb2d86cfbd789f92af175d933618cd1beda2e2061e1f815c9b133fcc51c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by ClamAV as a phishing trojan and ML classifiers indicated high maliciousness. It contains numerous external URIs, with one pointing to 'lozipotod.ru', suggesting a lure to a malicious site. The PDF structure and embedded links indicate it functions as a link farm, likely to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=superman+vs+martial+arts PDF link annotation
    • http://rbqjkwklnd.xyz/dodifererurezarigaralewespxr0a.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvuxemoguf/fiiajbG/wunolidamoweguvamuvajub.pdfIn PDF document text
    • https://tedajurilazunu.weebly.com/uploads/1/3/0/7/130739962/4d78e9c2cf.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/ajiY6LB/monument_valley_game_art_prints.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/GbJ3rgc/fubo_tv_roku_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/zabadiripo/4Wtqu6b/78434519864.pdfIn PDF document text
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/lajeraw-tasalozenanezeg-nezirupili-jisekumo.pdfIn PDF document text
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/808bb.pdfIn PDF document text
    • https://jezuvafu.weebly.com/uploads/1/3/5/3/135348480/jowazarivemerug.pdfIn PDF document text
    • http://christmas-gift.ru/32_questions_to_fall_in_love_nyts2jm3.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/cQIKeih/650454301.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/ifihxjh/tiny_kingdom_builder.pdfIn PDF document text
    • http://bahis-sikayet.com/bank_compliance_officer_duties_and_responsibilitieszdciq.pdfIn PDF document text
    • http://changepass.online/tablature_solo_guitare_le_penitencier9j8xw.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/tepematokagudina.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f6a6ed2-89e6-471c-bf8b-c32d899aed24/how_many_roald_dahl_books_have_been_turned_into_films.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/105cd071-6bc5-4197-a366-2620249648b5/61530525963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e535a6a-4889-4f6f-8969-ae6393737aea/financial_statement_analysis_template.pdfIn PDF document text
    • http://lununobasafino.rf.gd/portfolio_illustrator_design_template.pdfIn PDF document text
    • http://ditelaxi.rf.gd/aesculap_dental_catalog.pdfIn PDF document text
    • http://javewebug.epizy.com/19990374492.pdfIn PDF document text
    • http://mawuxukajenup.rf.gd/68316520040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee04207c-f7a9-4857-9eab-9c1a3dc04ded/what_is_the_meaning_interest_rate_risk.pdfIn PDF document text
    • http://xosekipile.rf.gd/37879931087.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_off0000f314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF314 5128 bytes
SHA-256: 8ad34c717dece4f57361fea6eda63b30a3a688b6ff4343af59f7cccee38aa005
font_01_sfnt_off0001046e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046E 10436 bytes
SHA-256: a43de05f52f2821b2bfaad79246898749106c12691160eb33f3c98fcc21d77c8

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