Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea9d58c1b9e2c49…

MALICIOUS

PDF

79.5 KB Created: 2021-04-30 00:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8d2ad64a67e3c9dd7e596a6ce0fe06d5 SHA-1: f27022983237190df91f11ef43e9525fe23583e7 SHA-256: 0ea9d58c1b9e2c495eeba1c16c322ab6edc5d9e087ebb06e2a305be302cf43ba
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on 'https://fokemale.ru/strik?utm_term=heat+n+glo+fireplace+cleaning', suggesting a lure for phishing or malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using disposable hosting for multiple links, reinforcing the malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/strik?utm_term=heat+n+glo+fireplace+cleaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416500/normal_5fc7efb79cd78.pdfIn PDF document text
    • http://latujor.22web.org/45217142538.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/99996974312.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/reliability_engineering_e_balagurusamy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466165/normal_6025691abac30.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/what_size_tires_are_on_a_2005_chevy_equinox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_6006706bd2a1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_603f3968a2a44.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gifixutazopoja.epizy.com/32990988460.pdfIn PDF document text
    • http://mawafomixo.rf.gd/what_is_the_best_way_to_treat_a_cystic_pimple.pdfIn PDF document text
    • http://sugebajofurite.rf.gd/bakery_business_plan_in_malaysia.pdfIn PDF document text
    • http://mosuzuxogobet.epizy.com/29886290713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109179ee-555d-4c9f-981a-8305c0e82b54/civil_engineering_firms_in_portland_oregon.pdfIn PDF document text
    • https://39472683-7d43-4bc3-882b-0947a83fd973.filesusr.com/ugd/544c7e_fcfbcacafb614a7396a5f55b483a8122.pdf?index=trueIn PDF document text
    • http://pebabub.rf.gd/biblia_cristiana_reina_valera.pdfIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_9c7e00d40caf4a01b3c02562ad81dda6.pdf?index=trueIn PDF document text
    • http://sakikuzugodo.rf.gd/protein_structure_pogil_ap_biology_answers.pdfIn PDF document text
    • http://jilawovo.epizy.com/infinix_note_8_lite_price_in_pakistan_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defcd097-3d4c-48c8-be52-12fa955a3887/half_blood_prince_audiobook_archive.pdfIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_277def68006c4d99bf3d1e95c7ae6094.pdf?index=trueIn PDF document text
    • http://xexasuwoxomiba.rf.gd/sikabejuraxo.pdfIn PDF document text
    • https://178fd8f3-986e-459b-a431-83c1f58eadb8.filesusr.com/ugd/7a8e82_7c2701f380ae4d6ba18358dc19cca351.pdf?index=trueIn PDF document text
    • https://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_3a338bc76e924133a77922355c486057.pdf?index=trueIn PDF document text
    • http://gajutar.onlinewebshop.net/18351966406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED61 4752 bytes
SHA-256: 0e401eeefdf6a477950a4570a77f7f132dbd2f1fefa6b22ebcd72241a80d2ffe
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 10920 bytes
SHA-256: e2ec97a9e63168c4a779e34652bcd5664b789cc1a2e047c48c3e75afa7f36fde
font_02_sfnt_off0001225c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1225C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333