Malicious PDF — malware analysis report

Static analysis result for SHA-256 174f684765be697a…

MALICIOUS

PDF

77.2 KB Created: 2021-03-18 04:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14655a7eae89bfe95e599141b6cece6 SHA-1: 3f98b8bf418377fc3b5da38b46539bd4e27ea52f SHA-256: 174f684765be697a735fa3b7371904b8c1fb20dc0d94e2202714fce97b441882
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body contains text that appears to be a lure, referencing 'Cachetada a reportero', and the authoring application suggests it was generated by wkhtmltopdf, often used for creating PDF documents from web content. The presence of external URIs indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/123?utm_term=cachetada+a+reportero
    • https://cdn.sqhk.co/totarujined/ficnibI/relational_algebra_query_questions_and_answers.pdf
    • http://sugameloxufe.mywebcommunity.org/2571079105.pdf
    • http://sonigepugafufi.iblogger.org/bankers_adda_current_affairs_2020.pdf
    • https://cdn.sqhk.co/bexutavukaro/kWqXUxW/august_2018_calendar_editable_template.pdf
    • https://cdn.sqhk.co/bojojiweg/2hjcMjf/vapifod.pdf
    • http://sevagawos.getenjoyment.net/wu_tang_american_saga_episode_10_cast.pdf
    • https://cdn.sqhk.co/rutesawir/fifjbpw/2640524006.pdf
    • https://cdn.sqhk.co/vadetegubufo/gdhbWsT/18535489787.pdf
    • https://cdn.sqhk.co/javomekoru/jghbm3H/99020366942.pdf
    • https://cdn.sqhk.co/durotula/vljhidk/komalumezalunizojoji.pdf
    • https://cdn.sqhk.co/bixatavafut/Ygem7DG/battletech_mission_guide.pdf
    • https://cdn.sqhk.co/safovokon/2gghhha/62269119112.pdf
    • https://cdn.sqhk.co/mabisurud/dH5Yhgc/mystical_mandalas_colouring_book.pdf
    • http://nizavevorupuj.mywebcommunity.org/cuantos_cm_hay_en_un_metro_cubico.pdf
    • http://wuxifev.iblogger.org/mazizoposazewizuvo.pdf
    • https://cdn.sqhk.co/liregevo/hcZhejd/top_40_pop_hits_today.pdf
    • https://cdn.sqhk.co/mibemofega/ijajgQ4/parallel_worlds_book_review.pdf
    • https://cdn.sqhk.co/numiwufeguv/Ogi1yGj/kiradifulobisiwipo.pdf
    • https://cdn.sqhk.co/tememagitapo/gP4z7ha/connected_investors_micro_flipping_reviews.pdf
    • https://cdn.sqhk.co/valujoper/hht4ij5/cooking_master_game.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://penobugixova.atwebpages.com/cost_center_accounting_sap.pdf
    • http://sivikonalijuto.myartsonline.com/ruzasuwisimusovofi.pdf
    • http://bumilofu.rf.gd/43998334291.pdf
    • http://bifarukudivur.epizy.com/92467389893.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef34.bin
298f9533fc2dbdafb0ef833c1ef8d729c214ea2677d40cf356e6c5dee0c6a09f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF34 4856 bytes
font_01_sfnt_off0000ffaa.bin
84180e9e819500d34c35975abea87839cb3b4731c9ba246593feba421231b4d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAA 12036 bytes

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