Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb75601f3186a64a…

MALICIOUS

PDF

105.8 KB Created: 2021-05-12 08:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 598e13b018977f1c5d3a94ae6bb9c472 SHA-1: 48e9f8de63503119132eeb6af82113b550ea0723 SHA-256: fb75601f3186a64ae935e4f5f9a57a6af3eb4e848dd353fca9618e3f1a352fd5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing malware or conducting phishing. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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=star+trek+discovery+season+3+episode+5+full+cast PDF link annotation
    • http://meine-gebuhrenfrei.com/encyclopedia_of_mythical_creatures_plb2s4.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/fomivozonibokurexedako.pdfIn PDF document text
    • https://gidapozu.weebly.com/uploads/1/3/1/3/131379371/xijatapaw.pdfIn PDF document text
    • https://bumewotosebixab.weebly.com/uploads/1/3/5/2/135298585/31b5bdb60165.pdfIn PDF document text
    • http://xijafagupigor.22web.org/morelata.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/de_que_se_trata_la_obra_iliada.pdfIn PDF document text
    • https://bogezemobazuv.weebly.com/uploads/1/3/1/8/131856224/1285775.pdfIn PDF document text
    • http://servisvds.ru/suzetuvomr51ii.pdfIn PDF document text
    • http://english-10.site/87882401588qpnia.pdfIn PDF document text
    • http://xapunubezes.iblogger.org/doxewuluwemisan.pdfIn PDF document text
    • http://dream-stat.ru/tulasaxaluv39alc.pdfIn PDF document text
    • http://mipexalazalekab.getenjoyment.net/types_of_academic_articles.pdfIn PDF document text
    • http://newobesarejif.22web.org/14449982057.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://menufuvaso.rf.gd/64410948143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be095247-a53e-4232-a72f-17e4dc7ed575/65181062219.pdfIn PDF document text
    • http://podekewijove.epizy.com/wendys_fries_nutrition_info.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afe88847-e0e4-44e1-afc2-ef9c9978639c/how_to_setup_brother_hl-2280dw_wireless_mac.pdfIn PDF document text
    • http://sakamajuxuga.epizy.com/bol_tere_mithe_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d675513f-26f3-4d72-83c3-a33648455a21/xonanatodekeduwop.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/31904556817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c239597a-f76b-43cf-b7a5-ee18b977584f/87238645992.pdfIn PDF document text
    • http://kikodanaso.epizy.com/how_to_detect_firewall_in_network.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb003dd0-4dd7-416d-b74f-f255bd94ee09/how_to_connect_hbs_730_to_mobile_phone.pdfIn PDF document text
    • http://tixobanawogoki.epizy.com/classical_mechanics_goldstein_solution_manual.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_off00015e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E00 5764 bytes
SHA-256: 9d6163f9c5075074963d58ef44a65c8a8c607c7169a23772df60e5a90e597097
font_01_sfnt_off000171ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171CE 11400 bytes
SHA-256: 9e29766924c1ab762a77c18cece5538a3c3692e197267e07b42dfae0cccab7b5

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