Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4740c4e1ccb7c3…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 17:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7daf613f7a024bb9404d8bc4f2bd2e6c SHA-1: e2a8dd90e52f821b1e83405c12d8aee15ddf2ead SHA-256: 7e4740c4e1ccb7c319173b7c684835ea2627604380004b381eb8d932563c34f3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=uccx+design+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387035/normal_601b5ffb8b150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463785/normal_5fd13c5bd042b.pdfIn PDF document text
    • https://zetozegazironik.weebly.com/uploads/1/3/2/6/132696155/6070452.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/xafixelupu-tubugideduv.pdfIn PDF document text
    • https://tabikajodunel.weebly.com/uploads/1/3/0/7/130739544/loxamagamolojuw.pdfIn PDF document text
    • https://juzopuxenepin.weebly.com/uploads/1/3/5/3/135383483/zunisipirimisolutob.pdfIn PDF document text
    • http://instahelpforbusiness.com/design_brief_template_freerwbkt.pdfIn PDF document text
    • http://123dutch.com/96491447771k4ylr.pdfIn PDF document text
    • http://honey-love.ru/serta_mattress_reviews_consumer_reports9sj6v.pdfIn PDF document text
    • http://apparentlyopt.com/kikuyu_bible_appx1z5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_8a5a43e1f4424167ae13425faec2dec3.pdf?index=trueIn PDF document text
    • https://72cee60b-533f-4fda-9f40-87b1bb6f0553.filesusr.com/ugd/590778_cbf41107dfb042269511317b1386f6c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bogeguva/fujonajekaselenuruwevipaw.pdfIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_8a4281f3f3ac4165a90beb6c56eb04bb.pdf?index=trueIn PDF document text
    • http://losalevova.epizy.com/36718108378.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/sansa_clip_plus_firmware_update.pdfIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_640b36b59dc24a0c97160cb347108171.pdf?index=trueIn PDF document text
    • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_c635c540375f438f8ac4048f196a03f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mosezavor/nj_dmv_address_change_form.pdfIn PDF document text
    • http://rivowotow.epizy.com/ammeter_voltmeter_galvanometer.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_off0000e39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39D 4828 bytes
SHA-256: fd46f6972234e4f900fbab15326e0804b33e9285d0812e99216bea4416855f33
font_01_sfnt_off0000f42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42A 10260 bytes
SHA-256: c48f865778de28921deb7919a6507846a79cdab7b46af88a9039f542dc00c2b7

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