Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e2581566c2d676…

MALICIOUS

PDF

68.7 KB Created: 2021-09-26 08:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 295407c989699828e432834d3194badb SHA-1: 014b10fe017d62a370b8a1a91600aab32423a476 SHA-256: a6e2581566c2d676701c57e106cdabeb0eb7b50b7b5e09b8856833f4e0816553
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://starfishdowney.com/uploads/files/94492953296.pdf In PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614090921c035---falomikilusoxiwu.pdfIn PDF document text
    • https://pottoka.info/files/galeria/files/vazabigisagamezululewefu.pdfIn PDF document text
    • https://sino-islam.com/upload/file/260057255118.pdfIn PDF document text
    • http://generaldistco.com/images/file/86802044789.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/sobunifiti.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/161460adb26078---82753374360.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/34844809b7be36a0962311a38f28b554/togin.pdfIn PDF document text
    • http://gibisch.org/files/files/81275779916.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/fijateku.pdfIn PDF document text
    • https://koncnc.com/genelresimler/file/junulabotowinekup.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/79145474783.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/98124827774.pdfIn PDF document text
    • http://le-nora.com/userfiles/file/mukerilazozodopapativi.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/16397218973.pdfIn PDF document text
    • https://catequesisnavarra.org/guiarte_userfiles/files/55433263758.pdfIn PDF document text
    • http://fireprovietnam.net/luutru/files/lusixiwakutilixog.pdfIn PDF document text
    • http://simsvizag.com/admin/uploadedfiles/file///34581477178.pdfIn PDF document text
    • https://purefeeling8.com/data/file/21796574409.pdfIn PDF document text
    • https://oriolefashion.com/ckfinder/userfiles/files/monasipuw.pdfIn PDF document text
    • https://extremedriveline.com/ckfinder/userfiles/files/98510558040.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16142f786697cb---69391799641.pdfIn PDF document text
    • https://malayalamfoundation.org/admin/my_files/file/bawazikotoziluragelo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=teams+android+tvPDF 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_off0000b160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB160 10392 bytes
SHA-256: a706445f21814f6a472f0beed53c1ed90fa61cf5a3e72a6f0b79581843231b33
font_01_sfnt_off0000c8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E4 14612 bytes
SHA-256: d2d54aedfd44b3db807ec55345f5a8a2635d3d2b8962ed76fc81f44d2d09cfae
font_02_sfnt_off0000ed33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED33 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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