Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f69eeadacd8ee96…

MALICIOUS

PDF

79.4 KB Created: 2021-09-09 01:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 2cf6b8cb978c5518b006362710fa42ea SHA-1: eeff9fd2c187292b767e9430db1b5ec3ceef0273 SHA-256: 8f69eeadacd8ee9612b5d39c1648d39aa9c64070f20d413dc55a575f8d873cf6
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous embedded URLs, many of which are part of link farms on disposable hosting, suggesting a phishing or malware distribution attempt. The heuristics also indicate lures related to payment redirection and callback phishing, consistent with business email compromise tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://medvor.ru/uplcv?utm_term=freenet+pop3+android+einrichten PDF link annotation
    • http://propack-th.com/image/upload/File/6549245921.pdfIn PDF document text
    • https://raselapp.com/userfiles/file/85056103886.pdfIn PDF document text
    • http://sweet-sugar.de/images/uploadedimages/file/74716062861.pdfIn PDF document text
    • http://mecateengenharia.com.br/ckfinder/userfiles/files/19642290197.pdfIn PDF document text
    • http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/xawolexixadeworufeduf.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/76713442919.pdfIn PDF document text
    • http://24horasnoar.com.br/ckfinder/userfiles/files/64639503312.pdfIn PDF document text
    • http://zhfangyuan.com/uploadfiles/files/44110202223.pdfIn PDF document text
    • http://onyx-innovations.com/assets/ckfinder/userfiles/files/napikoparegepi.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebf88f3044---17124876451.pdfIn PDF document text
    • https://textosolutionslinguistiques.ca/upload/editor/file/64902648073.pdfIn PDF document text
    • http://pantipplaza.com/userfiles/file/ralezowona.pdfIn PDF document text
    • http://skene.es/userfiles/file/xevexorut.pdfIn PDF document text
    • https://inprovitchile.com/ckfinder/userfiles/files/kadukolobadij.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/vijub.pdfIn PDF document text
    • http://ekorepetycje.eu/Upload/file/91389998764.pdfIn PDF document text
    • http://discus-rus.ru/upl/file/51773100827.pdfIn PDF document text
    • http://thriftstorewebsites.net/flash/thriftstorewebsites.net/file/18833333686.pdfIn PDF document text
    • https://pmms-online.com/assets/file/lurujifukilunotuvexaz.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/dupagupuziwarodisagomij.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/15218586836.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210904180150.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/fanovukinikij.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/mokurexarop.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/64772291909.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/23340799781.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F8 17464 bytes
SHA-256: 456e214023ea099c9914cadab144f89d2a8ef6bfe803b040213567db734629be
font_01_sfnt_off0000ff72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11789 10544 bytes
SHA-256: 06d10208bf25770ef7382d8caa7b9d770a0873959cb581c142ca49c1263c482f

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