Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac87afc193f2e55…

MALICIOUS

PDF

83.8 KB Created: 2021-07-04 03:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 8dc6296500a886a669861b426729b62f SHA-1: 634e833dc49e34a3156c23f3349da2b52477ecd8 SHA-256: 5ac87afc193f2e55a4971a57a26a127942c88e16583be32169ccc011785f4317
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a payment redirection lure and ClamAV detection. It contains numerous embedded URLs pointing to compromised websites, likely serving as a link farm to facilitate phishing or credential theft. The document's structure and embedded links suggest it is designed to trick users into believing they need to update payment details or make a payment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crewmak.ru/uplcv?utm_term=7+dollars+in+rupees PDF link annotation
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/ecce7d82702de08b820e3114e672de6d/4816832538.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdef1681cb---90980659799.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/58503770233.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/3fca1629df59656660e711695d040beb/gamuzidimalubuv.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/646d79gpkmi1g4uk85r8qmfn5s/rajig.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609264f152719---rurafivozetazamogo.pdfIn PDF document text
    • http://canvangdientu.com/images/file/64096702141.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/48301be484ff835367e5291c0862543c/72558477946.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160850a1255b05---47227947930.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e3fd534ac---26164265254.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb865b5433---78977374707.pdfIn PDF document text
    • http://giadinhlaurenso.org/upload/files/guvisimolarewi.pdfIn PDF document text
    • http://www.dreamstoreonline.es/ckfinder/userfiles/files/91613258481.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/a353c2edf953ece7b25bffc7494b51d0/22645879924.pdfIn PDF document text
    • https://ntct-dz.com/ckfinder/userfiles/files/73877037306.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb75ad30abd---xidefasen.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/36562366385.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16092b33f85e6e---98320553748.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/5bk4iu4k3lg4tqsbk20iqtonpp/52743391078.pdfIn PDF document text
    • https://tonymusic.se/UserFiles/files/fapapiteluw.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/91949348271.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/fd2d2f1d9b8539ffe576c2107f638cf9/48013230452.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/c10e24129c5771f4c208c905dbdfac26/40446852715.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE660 17016 bytes
SHA-256: 2c6532e5b128a1ef3dc6bc3dd2e8e74cc367b0af422a6bc401bf9642a366b123
font_01_sfnt_off000112d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AEA 10340 bytes
SHA-256: 77a7fd8c24c3f9ba02b5b231e54c2108df32a10b73e3028c26dd8bed5ebcaa9a

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