Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e7f22330faa694…

MALICIOUS

PDF

70.9 KB Created: 2021-09-25 00:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6a34cb1d84ded064ab2a2432e6a6eccf SHA-1: 1ec83a9cf193576984b1cb3030ed89cb2593822b SHA-256: c3e7f22330faa694a9115223edd8b8e111e4d8dd9b9faa04e5348768d0111dec
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights this tactic. While no scripts were explicitly extracted, the presence of numerous external links and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://triptoboloyfoundation.org/editorsfiles/files/8212520592.pdf In PDF document text
    • https://jimsdelibrookhaven.com/demo/jimsdeli/admin/userfilesfile/46456380479.pdfIn PDF document text
    • https://globalmediaminds.com/uploads/files/xaloxatebisibevexelunek.pdfIn PDF document text
    • https://self-storage.sg/images/uploadedimages/file/gopilezuropujegaminuvinet.pdfIn PDF document text
    • https://rendszergazda-cegeknek.hu/ckfinder/userfiles/files/3796931897.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/jggue117jibs5bhqip7acaupjb/rabegebotejoberow.pdfIn PDF document text
    • https://artofsurfing.com/preview/ckfinder/userfiles/files/jakazigakox.pdfIn PDF document text
    • https://nepalmicrofinancesummit.org/userfiles/files/69277086280.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144b84859e3c---78505117044.pdfIn PDF document text
    • http://sensitiva.fi/UserFiles/File/kebuxomojasu.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/32201620577.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/161377bc43b968---rigiguvitu.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/6a94bc860a13f90b451e687144a61e12/48526149362.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/ed6c76976c26eaf70866aa366f61b17b/76602056129.pdfIn PDF document text
    • http://geosond.pl/userfiles/file/22087521562.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/87119348920.pdfIn PDF document text
    • http://fotocaroli.it/userfiles/files/witer.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614e3e53d5a28---boderoxitumugatevok.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/1b735b66442c51eb55b80375e419fdd6/penasoripogoketevafipevo.pdfIn PDF document text
    • http://dd-eng.com/files/files/51161732489.pdfIn PDF document text
    • http://www.chp.pl/ckfinder/userfiles/files/91618757923.pdfIn PDF document text
    • http://domadoma.cz/userfiles/file/kasunitegoj.pdfIn PDF document text
    • https://dalycity.com/wysiwygfiles/file/vibufovidonabo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=failed+to+install+android+sdk+packagesPDF 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_off0000b352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB352 16412 bytes
SHA-256: 7436cd95894352c7b718edf320eba5ee97bf72981635bcff34bb6cfb6d5b5bed
font_01_sfnt_off0000dce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE9 10756 bytes
SHA-256: c1b0f52e3efbb62911610ecdaf144654c340822429dc20eeb0322660519db46d
font_02_sfnt_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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