Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dee029c963e72ee…

MALICIOUS

PDF

81.2 KB Created: 2021-06-28 04:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 49a909c905f799469cabb46be822a112 SHA-1: f74a02b44ea98ce14dd84dce8ce6e39e642fca20 SHA-256: 2dee029c963e72ee24bc6e3b5197a8c1a60e9c91dd61f4514bd8856e6cbd56b4
164 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. The heuristics reveal it functions as a link farm, hosting numerous links on compromised WordPress sites and disposable domains, likely to trick users into downloading a secondary payload. The presence of a 'download button' lure further supports this phishing-like attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://anandtouristcorporation.com/uploads/56589862566.pdf In PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/7b4191ac8c95d78551d05c6ad3f54ae1/fuxujolamo.pdfIn PDF document text
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/17103796266.pdfIn PDF document text
    • http://www.bufolari.com/public/immagini/file/32916312279.pdfIn PDF document text
    • https://pmms-online.com/assets/file/mobegodiletoni.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/bk8qckqdndnln31sfe1eob4qkp/xaxuxipurujonedupaw.pdfIn PDF document text
    • https://fl-forever.com/upfiles/editor/files/64296479631.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/e9e90320d6793d3124ea4a07ea9806d7/ladifixetakuxik.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/6d20c50ae028ce96835f914211711633/22868091083.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/14873613499.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6772919836---87524167170.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/1p9d0fqermi1dnmu1jqc8mns42/6079219975.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/vepanitig.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/65318796584.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/39747774964.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/90185842039.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/74724383405.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7eaa75588---xijadu.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/i3a8km0o9mplkj7c9ioapq1vsk/48213929354.pdfIn PDF document text
    • http://www.ks-zahnarztpraxis.de/upload/files/wetajidozuximigugete.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/61a8a98ef68d8c3619ee1eede9dd415f/bevitod.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/2b1924bf353e6deffe59788a6955a883/26604370009.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/55m1km5803o7c4fsjkdjk10rdp/42501590617.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee4d9ed829---7896961497.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/0kbvlspqujd0mnfm313ptgt6uj/51793681045.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/3073b78f58cff262445ab22279547f28/salujarumotoba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=previous+year+gd+question+paperPDF 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_off0000d466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD466 10948 bytes
SHA-256: bcdd2aabd09e6b002f4ef399f1f0d6e1c607c1f7e3b7a519305659435359725a
font_01_sfnt_off0000ed77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10589 19112 bytes
SHA-256: 7c6e1af9f7300e61d59c38a49a8b5ccba66bc871c716b7a629ba211a8d881f18