Malicious PDF — malware analysis report

Static analysis result for SHA-256 382961c8d7cecf14…

MALICIOUS

PDF

95.1 KB Created: 2021-07-07 21:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 291e9cb4609709c89db86989d642f14d SHA-1: b443397b617c42750d4777adbf6cde026a84494f SHA-256: 382961c8d7cecf149b4091e99b9fc97191c1553857cb595a0cb16332c9f1d23e
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to distribute malicious content or conduct phishing. The presence of multiple links on disposable hosting further indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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 https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ce9ff0bd312---90944528258.pdf
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072a3e21895f---85548700466.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16091dfc6abeb7---34861884586.pdf
    • http://2ds-creations.fr/userfiles/file/dodexoboxopatudawubelu.pdf
    • http://maternites-catholiques.org/ressource/site-image/files/45865958157.pdf
    • https://samngaimarble.com/html_upload/file/kanabegozafexiteb.pdf
    • http://rideabikenews.com/user_img/files/lekuwuwefuler.pdf
    • http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/getipobadopovufiverukak.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd4db324a4---10460939878.pdf
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/523d56b492f29f54fc69ae81b1a44ba5/firosa.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/563ecd665e751ab1d7cd45697e7c2d8f/kefafobavufunitifasiwaw.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/c73b37fa9952e5501b539d719253197d/mepojurefogelujabivuxas.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/bbb42c61dea1b9a8ff3a6bb496361a25/vujuwuzudefunoviruvoril.pdf
    • https://webvitamin.vn/app/webroot/uploads/files/56445493011.pdf
    • https://fa-vietnam.com/webroot/img/files/83514260794.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078e3c31ac97---92404784903.pdf
    • http://kaies.cn/upfiles/file/27253013536.pdf
    • https://peterdegendt.be/file/46929872354.pdf
    • http://precedent.by/_newsite/images_from_html_editor/file/43066395911.pdf
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/d5e3f8fcac48e45333d99da6c19e1b4f/11142760462.pdf
    • http://iburgisidimarsala.eu/userfiles/files/99157732931.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bbd2c8bca---6300718688.pdf
    • http://rolmech-strzelno.pl/Upload/file/zakafomaluxik.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac48929934e---67829634427.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=can+i+freeze+shredded+chicken
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f7.bin
b67a8e01c17239a8bb51487f8aac5bf0d5e621d04f535d9ab1aac560940688e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 16828 bytes
font_01_sfnt_off00011086.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11086 16792 bytes
font_02_sfnt_off00012898.bin
6da7e3d12ed89483872081edd00498bdc033454b4075bdc913bad627555430f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x12898 17344 bytes
font_03_sfnt_off00015558.bin
062d07d9c6b708ac235fb162de93597ea27225483e07a81e7aa3a847bf98cada
pdf-font-stream PDF embedded font (sfnt) at offset 0x15558 10492 bytes