Malicious PDF — malware analysis report

Static analysis result for SHA-256 054b7ee5864ffa9c…

MALICIOUS

PDF

80.3 KB Created: 2021-05-08 22:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 143563a70c6cb6319510ee94b2cfdf50 SHA-1: 6719e1b0517237400ce35ded7d4cbf458ad43660 SHA-256: 054b7ee5864ffa9c8d5d59f0b1aa704469d11d47df8587137544b816f329ea28
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to a domain associated with phishing, disguised as a book download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URIs suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=rules+of+attraction+book+pdf+download
    • https://cdn.sqhk.co/roturoda/aCfghzO/boondocks_season_1_zip.pdf
    • https://cdn.sqhk.co/jaxabofapuw/dgeyNf6/voice_assistant_always_listening.pdf
    • https://cdn.sqhk.co/xubewarow/jcGvkjd/wijiwixal.pdf
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5fee13dbd069b.pdf
    • https://static.s123-cdn-static.com/uploads/4405950/normal_5fcf43160996a.pdf
    • http://tevajevidiwa.22web.org/xavak.pdf
    • https://cdn-cms.f-static.net/uploads/4478132/normal_602de5a379efb.pdf
    • https://cdn-cms.f-static.net/uploads/4460233/normal_602b5c6736907.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_3f707299df9544fe96c9967e44a50824.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ee016c98-8c03-4942-81b3-3118586805a1/jofuwepubomoravuwem.pdf
    • https://434dcbc4-7bd9-40fe-99bf-e102daebf961.filesusr.com/ugd/07ef24_aa925c1db2c9498a8f442fd98fdf6898.pdf?index=true
    • http://kosatalek.rf.gd/how_much_do_purebred_dachshunds_cost.pdf
    • http://pukupufiribeja.epizy.com/wepos.pdf
    • https://uploads.strikinglycdn.com/files/3da47cdd-eece-4e63-a5ca-23bef6e3a4db/15818024861.pdf
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_67b69da00e714ee797c541f01e1eb7ff.pdf?index=true
    • https://8c330184-3457-40de-b162-e34763a77ed1.filesusr.com/ugd/0aae61_dcd17690eb2d4b2bae337e03651c3ed6.pdf?index=true
    • http://rajemezipuz.rf.gd/aadukalam_movie_songs_free_starmusiq.pdf
    • https://uploads.strikinglycdn.com/files/72ba3848-afc7-4bcb-b4c4-e805b59b8d93/whats_another_term_for_conflict_diamonds.pdf
    • http://tagugatukosag.epizy.com/3384202579.pdf
    • http://tenovelipa.rf.gd/ssc_stenographer_paper_download.pdf
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_9cd271bf62f8429a850fec6160018661.pdf?index=true
    • http://zosoluvol.epizy.com/easy_formal_hairstyle_for_long_hair.pdf
    • http://wepebafefik.rf.gd/ximigiletumirotunazakedag.pdf
    • https://uploads.strikinglycdn.com/files/8984ad00-60a2-48fc-84e2-4436ecc47a25/wazimusukawuf.pdf
    • https://uploads.strikinglycdn.com/files/7e2b17e0-3566-4857-8aac-fb3f4bbe06bc/kijefofuxu.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_off0000fd77.bin
9e3fa4a567a37a868089a0fc2201d6078a6c5deac96e893d3c1456273347fdc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD77 5452 bytes
font_01_sfnt_off00011024.bin
ee04854ccabc9ff33bd92b10dee98b0ccd0489afb25333dee4a85fc0e37c71b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11024 10468 bytes

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