Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5c4137754fe2cc…

MALICIOUS

PDF

76.2 KB Created: 2021-06-06 04:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a0059a6c7f77bebb067b7d6d5df8211e SHA-1: 97851239eae7a66313132619a44c53e324a183ab SHA-256: da5c4137754fe2ccf5e3b445950718d282e2dba6f9997540e435a15ae777e641
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a payment redirection lure, likely designed to trick users into clicking a link to a malicious site. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lures suggest it may exploit PDF vulnerabilities or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://drafthe.ru/pbw?utm_term=what+is+ach+debit+mandate PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492900/normal_601988390da91.pdfIn PDF document text
    • https://bitojeromewex.weebly.com/uploads/1/3/0/8/130874526/tidagojuzagagarexuga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474471/normal_6036346b10a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452372/normal_6036b5e9b77f5.pdfIn PDF document text
    • https://mumilupoj.weebly.com/uploads/1/3/5/3/135351188/afee297980c.pdfIn PDF document text
    • https://jatuvukaxakepu.weebly.com/uploads/1/3/4/3/134313635/7185398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459035/normal_600eaeb942047.pdfIn PDF document text
    • https://nuruvubapifak.weebly.com/uploads/1/3/1/4/131452890/4e0ce7ac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_6069fac3256a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zeratuwolima.pbworks.com/f/download_harvest_moon_fomt_bahasa_indonesia_gba.pdfIn PDF document text
    • http://werinenimuta.pbworks.com/w/file/fetch/144681447/64656037916.pdfIn PDF document text
    • http://laxaxufudej.pbworks.com/f/jebuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24bab00d-0c0c-462b-b2fe-0d5c3c6c8c06/artemis_fowl_series_reading_level.pdfIn PDF document text
    • http://paditoxef.pbworks.com/w/file/fetch/144522612/why_is_catechol_oxidase_important.pdfIn PDF document text
    • http://gediripu.pbworks.com/w/file/fetch/144422868/88292162301.pdfIn PDF document text
    • http://zapibibilubo.pbworks.com/w/file/fetch/144696966/necromunda_underhive_wars_playable_gangs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfc1e148-fb33-474f-9b85-22d21c028e6b/geometry_for_dummies_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70579e5a-4c01-424c-9e8d-4ec2ee6601dd/57791968804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e4ae5a7-a032-4e19-98f0-978d2cb64994/bugizonelizoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e79d9ab-be95-436d-a0e1-d5dc8c03f0c3/gevumisizoguvekugefusobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd733e92-46fd-44ff-8c76-338845aab6d4/the_amber_spyglass_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e5e183d-08f6-4e50-b519-7016ae88787f/76686147906.pdfIn PDF document text
    • http://legesir.pbworks.com/w/file/fetch/144700362/how_do_you_write_a_letter_of_designation.pdfIn PDF document text
    • http://doxawadar.pbworks.com/f/45967362310.pdfIn PDF document text
    • http://biwonuv.pbworks.com/w/file/fetch/144558501/mesalijanivapomoxusikedos.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_off0000ea52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA52 5204 bytes
SHA-256: e60a059068bc29eea224ee3765223efebd1b4bba65d907f8cb42fd5b8f7370de
font_01_sfnt_off0000fbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE6 11004 bytes
SHA-256: c48bb9439ef87f35d8fe508ba8841b1fd568f4a2f138c523ca373f7a1220cb6e

Open this report in the interactive analyzer, or submit your own file for analysis.