Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cf1c80d476932e…

MALICIOUS

PDF

80.7 KB Created: 2021-08-15 17:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 628bb8ee1236d56ab2c1a0f156b78899 SHA-1: 3e063e201160b0b827174b53b2a472f73dc797a9 SHA-256: 96cf1c80d476932eb5a3d2bb5843bb9d7f1d7a121f8e4e6251b975a09c93e204
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV both strongly indicate maliciousness. The primary function appears to be acting as a link farm, directing users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160fd02744fc90---jujexike.pdf In PDF document text
    • https://eviinstall.com/userfiles/files/59422110417.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/fiwoluxogosixefi.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/tofha548ra5a0mv7grueunb8fo/94272023285.pdfIn PDF document text
    • http://kavtas.com/images_upload/files/xaveretapuxiwotu.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d73ec7168---tosomusetido.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/m2069h1jl33ue1j2ke03uknos7/76234479940.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/5374c41ee9f2c69ca262e3f19ade7fc3/ripabeguredexuki.pdfIn PDF document text
    • http://thecoferfamily.com/clients/7/78/7892d776c92a08c80f86ebc6236678d2/File/69343000975.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/8784768800.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/suzudoriruvodosafogiduz.pdfIn PDF document text
    • http://ipmarketing.net/userfiles/file/16595350773.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608999714aa1d---41972242586.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/u0f7nem9eoovf999ulkkldikf3/kamolejub.pdfIn PDF document text
    • http://ballstonfamilymedicine.com/clients/861402/File/sufamoxotevekebikedid.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16081dd3cf1dc4---84328176849.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/belekigokasojiwono.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/mafanelu.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160821ee41c1a7---87049053083.pdfIn PDF document text
    • http://hornets88.com/clients/56662/File/44813710485.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/c302ac2ac1a4ab85f61cade7e3224bf6/28740212794.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/f0gfcclcjastr65keqg301kfm3/81987723080.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe21e0cf7c---64681111875.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+secure+maxi+cosi+car+seat+with+seatbeltPDF 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_off0000db7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38E 15676 bytes
SHA-256: 774763e92302b4ebd1aecda1cc969323b4df2c1620b67823ba55bfdf6c066ab4
font_02_sfnt_off00011baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BAF 10812 bytes
SHA-256: 38e157d20ed3df8768e2ef8907eef2c999850dcbd50a38eec1ebeb841d327075

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