Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9b4ec193ca5005…

MALICIOUS

PDF

87.4 KB Created: 2021-03-01 06:33:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5309b5cf0bc2c6fc20eab2f53b61f232 SHA-1: 9ebb1dbf7a60efd8a8378ed9aeab3fcd69528ed7 SHA-256: 3d9b4ec193ca50054568e89f15dc0adb6c5319677d734d215c18b3d478a258fb
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded links, one of which is disguised as a movie streaming option to trick users into downloading further malicious content. The PDF also exhibits characteristics of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme.

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://vilenefex.ru/aws?utm_term=the+collector+2009+full+movie+in+hindi+dubbed+watch+online PDF link annotation
    • http://zabemaladameg.medianewsonline.com/broadcom_ush_driver_e6520.pdfIn PDF document text
    • http://20970907.net/actor_vijayakanth_songsefotu.pdfIn PDF document text
    • http://detonic-romania.website/how_to_describe_your_writing_style8vuh9.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/EaRLkia/clash_royale_elixir_tracker_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fe74fb04bb68.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/husqvarna_450_chainsaw_carburetor_cleaning.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/ibifBgi/12153543285.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/Z5dhbhh/96028687723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418970/normal_5fd9d8034b458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444366/normal_600b635a1f06f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_6038c6ddcaa1a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fejobizife.epizy.com/35271457553.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/27751755200.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/samsung_galaxy_s9_plus_screen_price_in_nigeria.pdfIn PDF document text
    • http://pevutedijubixit.epizy.com/diccionario_biblico_mundo_hispano_n-z.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/57567007943.pdfIn PDF document text
    • http://roxeruteruda.epizy.com/bengali_movie_belaseshe.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/wafusavezafoxutovariputan.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_off00011964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11964 5756 bytes
SHA-256: 1803f6a537f400b1bfd47ca01a5f4574aceb4ee8e609b8d69a98456a4b288048
font_01_sfnt_off00012cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDA 10348 bytes
SHA-256: b835825692bd8990986b2456dc427444e7d961ca8c937f20e832171e43381a5f

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