Malicious PDF — malware analysis report

Static analysis result for SHA-256 8407ee086abe7491…

MALICIOUS

PDF

75.9 KB Created: 2021-03-07 01:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 468921cc8f81f96c071b7d04ca0015ee SHA-1: a3acdd84f2bb541bd8ce699b8ec2b74258da2ac2 SHA-256: 8407ee086abe7491ff4e0e48b2a00248b09f66f64795353a0ba2b86c4a5146c4
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The document contains numerous embedded URLs, many pointing to disposable hosting and link farms, suggesting a phishing or redirection scheme. The primary URL, 'https://bologen.ru/strik?utm_term=2008+ford+escape+problems+transmission', appears to be a lure for users searching for specific vehicle issues, aiming to redirect them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=2008+ford+escape+problems+transmission PDF link annotation
    • https://cdn.sqhk.co/buwuvibija/E7dicJF/inside_out_cast_disgust.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/vujularesigux_puditajilor.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/nobakowaxatuguve.pdfIn PDF document text
    • http://dukepiweg.iblogger.org/bevewideta.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/lDrjejg/xorigokitikuxogade.pdfIn PDF document text
    • http://pugorot.mygamesonline.org/what_does_error_e_mean_on_my_honda_radio.pdfIn PDF document text
    • https://nirotobilimob.weebly.com/uploads/1/3/4/4/134484477/zusufamuf_maraxefeko.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/M20Rsii/father_and_son_days_out_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/Yghjaf1/nail_art_designs_easy_steps_at_home.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://87c8fc71-818b-4167-bf0d-2ac3bc49ffd1.filesusr.com/ugd/f9d4cd_dd97f9834c5747d5b190c8b99f1fadb0.pdf?index=trueIn PDF document text
    • https://e192e36c-395d-4660-9df6-aa7aed00c30a.filesusr.com/ugd/3aee12_f2ad9238fa6348ba8e684e60348407c9.pdf?index=trueIn PDF document text
    • http://josesomesube.myartsonline.com/what_is_the_difference_between_the_enlightenment_and_the_great_awakening.pdfIn PDF document text
    • http://favuzokusom.rf.gd/fuwenuzelenemuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cdd7ed5-a6a9-4a03-b4d0-396bc8f69525/will_colleges_reopen_in_january_2021.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/koxoworirinirokoz.pdfIn PDF document text
    • https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_92c093e441894312a09bfbafe2461cdd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bdc5fa-b589-4cda-b4f8-8f456b70a19f/inductive_analysis_in_qualitative_research.pdfIn PDF document text
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_60d2c0de76064820a5cd7b93aa9fbd56.pdf?index=trueIn PDF document text
    • http://dilutibu.onlinewebshop.net/notorixaref.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_off0000ead3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD3 5816 bytes
SHA-256: fd948175569d7bd047d0096014421ae20ce0a47996b4b685b95c473ae8c55758
font_01_sfnt_off0000fe7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7E 10540 bytes
SHA-256: 9425ed2db591b6fa5b78f431f992710a300cef671f951096e0002aca19752c6d

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