Malicious PDF — malware analysis report

Static analysis result for SHA-256 762e950ecb6151ce…

MALICIOUS

PDF

83.8 KB Created: 2021-09-06 07:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 60cfe71ee25caa5d9c729f4f3262ec13 SHA-1: 4454af4fa6a182396e8f2e35a008e89f5b316af6 SHA-256: 762e950ecb6151ce7c7d6ac1d95221ea42bca5a77d0677d890336c0859bdc82d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised or disposable hosting domains. The primary goal appears to be directing users to potentially malicious content or phishing sites, leveraging a technique often seen in phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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 http://aromaonly1.com/yamituki-n/uploads/files/46431136531.pdf In PDF document text
    • https://domilot.com/uploader/files/29065031561.pdfIn PDF document text
    • https://aful.edu.pe/ckfinder/userfiles/files/15492243052.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c108f7ef998---ginuvowerit.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/2ad913b1f1a2aaee2764b33c97b78c4a/10036634250.pdfIn PDF document text
    • http://sobsai.com/ckfinder/userfiles/files/71098782703.pdfIn PDF document text
    • http://podushka.by/files/files/73262063215.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/vuparalumevufebedosiguv.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/94db11562c1c84cbf7395e3ad4aea3f9/19813535082.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160798706d23b1---68119046991.pdfIn PDF document text
    • https://adurucui.com/ckfinder/files/82029546217.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160da1237a16fb---62018555835.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a59b1bb710a0c1a5fc90a472d5030cf/51375939967.pdfIn PDF document text
    • http://liceoadultos.juniorcollege.cl/userfiles/files/70021080470.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/88063961310.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609854bec8d87---jifikofixi.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/16928192621.pdfIn PDF document text
    • http://dongduong.net/Images_upload/files/18460425875.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/9cafae9a58ccca0e838761ad43760fe1/90933623974.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77355e342d---28908966961.pdfIn PDF document text
    • http://ainut.fi/userfiles/file/55666788261.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/bc69a765a5141f39f05069d1db690557/direlewevezagobipuru.pdfIn PDF document text
    • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/lavuxiposofajugi.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bde441e5521---worerakuruxexogijamerelad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=le+lyrisme+romantique+pdfPDF link annotation
    • 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_off0000df50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF50 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF767 10976 bytes
SHA-256: caaccadb2ebf9306a946ca2e2dc9e8617497f04a49156c800513273a9a445a25
font_02_sfnt_off000110a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A7 19780 bytes
SHA-256: 0c96b7f03c289bd0e20ce737f406252672833ae73aa21f778539e5a0a1e350c6

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