Malicious PDF — malware analysis report

Static analysis result for SHA-256 9297d1d75ec6ce19…

MALICIOUS

PDF

107.7 KB Created: 2021-06-29 02:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0b00d72e28f446709ea30c6b31d28fb7 SHA-1: 96e14d5824b88a4314367e150164a52fe3819387 SHA-256: 9297d1d75ec6ce197f225a84161f5e7c4a7b5f088352d9b3cc1156235ac7a876
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link farm, with numerous embedded URLs pointing to external websites. Several of these URLs are hosted on compromised CMS uploads or disposable domains, indicating a potential attempt to lure users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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://northwestpixie-bobs.com/clients/e/e1/e1941a3904c49320334fd90e0ed9e852/File/wuwaxitigofuwoxelorozepo.pdf
    • http://leaguengn.com/userfiles/file///sofaxofobovasoruki.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a4deb8bdc---torositifupij.pdf
    • http://m4klynchburg.org/clients/3/34/34420611de4c9c7593cf5e5fe12de6df/File/defarebexamenosiluwof.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d01f6a335---pejot.pdf
    • http://fullcolorspandoeken.nl/userfiles/file/4639047015.pdf
    • https://muzeumkonstancina.pl/attachments/file/taripixixosaf.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/uvj6vj5cg8kjod49t2ht4ha5o3/62122466489.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/3dafed858a36e9329ced99bfbe7b99cb/15666651624.pdf
    • https://otartufo.com/ckfinder/tartufofiles/files/7273669428.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d2e7a18a9---nusisokamosoduxado.pdf
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/19239337873.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16085bac45a1f6---soxamukefisat.pdf
    • http://www.cafeinca.com/img/public/contenido/file/8889749873.pdf
    • http://lhsclassof68.com/clients/73441/File/powajukatetosuvokokom.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4a46d3059---94039114014.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/j06gdg8h1e9ud8rinnhe9ripvu/tenotelotav.pdf
    • https://cplastik.com/data/cms/file/rovanidurevadizajisoro.pdf
    • http://ngor2-3.com/file_media/file_image/file/xigumabavoduk.pdf
    • http://www.darvidproperty.com/news/file/86839055530.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160973fe3dab40---80958374492.pdf
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a6756b2a9---dixazeteluvorof.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/p9urf79v4a40hslu6833ucdifg/zaduwi.pdf
    • http://sequirk.ie/userfiles/file/fejoj.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/avf7nf2k0gbiahdcrt187k4fh8/34560349110.pdf
    • http://maihome.hu/admin1/file/sizinegupi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=bebe+buell+today
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001447e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1447E 16792 bytes
font_01_sfnt_off00015c90.bin
6bf357ef40b5b06ef3acff05f25d014bf8651a7b707c0d90555afb9550400a11
pdf-font-stream PDF embedded font (sfnt) at offset 0x15C90 17544 bytes
font_02_sfnt_off00018a6e.bin
2abc9344529fc5a249758d22b4c47292f04dfe554df52865a4016e98fa6f4bce
pdf-font-stream PDF embedded font (sfnt) at offset 0x18A6E 10184 bytes