Malicious PDF — malware analysis report

Static analysis result for SHA-256 040a1e0f8c580b3f…

MALICIOUS

PDF

84.2 KB Created: 2021-05-07 06:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fb6c7b68b2fd9eb6e9c6347a9d082c3c SHA-1: 7d24950ba6c32baf09a51f7735a509576bc91541 SHA-256: 040a1e0f8c580b3f2d603688f669c58e7464c9c2cd6cf269cf6effaacbb86098
126 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'maypoin.ru' and disguised as 'penguin bio wheel 200 instructions'. The PDF structure also indicates it's part of a link farm, suggesting a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=penguin+bio+wheel+200+instructions PDF link annotation
    • https://cdn.sqhk.co/bularalunop/c7QFjf7/65168247965.pdfIn PDF document text
    • https://cdn.sqhk.co/mimotulifoti/wbQ1jaj/download_plant_vs_zombie_heroes_mod_apk_data.pdfIn PDF document text
    • https://cdn.sqhk.co/bezizafosu/qgg2pOY/85204630205.pdfIn PDF document text
    • https://cdn.sqhk.co/jikowuzu/ifHCjfk/google_chrome_for_ubuntu_16.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/5qgcmyd/kobaterumapuruko.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/hoQhaja/oil_mining_factory_petroleum_refinery_tycoon_simulator.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/genie_model_3024_price.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/Vlmshbv/messages_app_aesthetic.pdfIn PDF document text
    • http://vasizazesunof.medianewsonline.com/gomibumuwibutofugojesisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486748/normal_5febb5b394143.pdfIn PDF document text
    • http://gofadivus.mygamesonline.org/asme_y14_5m_1994_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/1MiaWgf/wheel_scale_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404966/normal_5feb4fc78b770.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/hjbqgii/streamlabs_commands_list_for_mods.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
    • https://uploads.strikinglycdn.com/files/8e7307d6-3eff-45b3-8fdb-a277ea88bcfa/vampire_diaries_the_awakening_and_the_struggle_summary.pdfIn PDF document text
    • http://nugazovonina.rf.gd/85044267399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d00138df-1bdd-478c-abfd-7ee7b83e8ff5/can_you_make_more_money_on_youtube_or_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f5dbd3-9f51-4966-a7d4-a3aa7cdade6e/19449588368.pdfIn PDF document text
    • http://gapevizatijaba.epizy.com/mogusutixezik.pdfIn PDF document text
    • http://dafiwogi.rf.gd/aristotel_retorika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c328d54-6636-4b94-a125-9f952cf61ef4/what_is_abstract_photography.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_off0000fa11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA11 5240 bytes
SHA-256: e7ec011070bea41cdf391cb47af19e5ff80070527cace9d6494053515be330f2
font_01_sfnt_off00010bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEA 11788 bytes
SHA-256: 491ba67b5d114c7e2477b738acdf0d06bbd34b9bc1674017bfdea425aacc5e9a
font_02_sfnt_off000133ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133EE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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