Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed0ae7f2bc478b7…

MALICIOUS

PDF

92.9 KB Created: 2021-08-17 15:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1d27b7de949d26e8d9264a73edd8f1d2 SHA-1: c611fd2e29ff81a7d9cf8569ff7e6df06cf549e6 SHA-256: eed0ae7f2bc478b7be67c74731bc713565136c98b1c63e8f1885c1febcee8960
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting domains. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 https://pistant.ru/uplcv?utm_term=piano+sheet+music+pop+songs+for+beginners PDF link annotation
    • http://sunrui-ti.com/d/files/61009479668.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160fff43d61845---83920655337.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/23404038930.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c015e758e---babuvuvajeseferir.pdfIn PDF document text
    • http://maility.pl_adresuserfiles/file/fevoduvuvi.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/73052438419.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/181fe402284641482a2790800f6c1757/wokozalejirolagufitu.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/74752154165.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/62607763936.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f7f76189363123d03d41d0d485f18812/mulukiwubowimikukivujulax.pdfIn PDF document text
    • https://nhahangphongcanh.com/uploads/files/gutanivaterik.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160c54495ccb3b---lurejavuzepuw.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd279eb487---firevipakujen.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/rgjfs0gap4vmfsf1np8rd6q2k7/68135405047.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/fehm7ot7u5gthn7seke8d0gcj5/rojofoz.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16110e19d7346a---wajaxonasivege.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfb9f361cc---79281199953.pdfIn PDF document text
    • http://cimkezes.hu/uploads/ckfinder/userfiles/files/sewubufoparivupefed.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/2543356974.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160835892c4309---zorowojedibebefajiguru.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/vekobopogo.pdfIn PDF document text
    • http://southeastern61.com/clients/0/07/0748cf78e2268043913ae7c14e09e996/File/71043264587.pdfIn PDF document text
    • http://kaies.net/upfiles/210801031038640963xdzd10.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_off0001063b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063B 17568 bytes
SHA-256: 630b2a2c0dafcbbef6d557e1ab4e709dd2f9a96b5c749e79718fa0ea8efdfba7
font_01_sfnt_off0001342c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1342C 11120 bytes
SHA-256: 9077f9e577acbc63953314dede730449f3c0991b0e4f12d0dc8d4b6c8aa3d35c
font_02_sfnt_off00014dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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