Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70f8117c9ffff79…

MALICIOUS

PDF

104.8 KB Created: 2021-06-30 02:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5e00ddf09b32d866a3f4816ffa72f572 SHA-1: d9dff714f9bed29492f509a1f6b5671ee14e671f SHA-256: a70f8117c9ffff795b55a0484e4a8fc67bf8f909d24f8016921f96912c33712e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs hosted on compromised CMS platforms and disposable domains. The primary attack pattern involves luring users to these sites, which likely serve phishing content or further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pistant.ru/uplcv?utm_term=adequate+motivation+of+employees+results+in
    • http://gistfamilyreunion.com/clients/8/8c/8cbf0a40baaab9dd4734ff2cdbb1e120/File/84872204373.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/rlhhrn3l715ukrpp97bddl2f1s/58005409681.pdf
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/2de816e039b058555de582f60ed2e97e/motenefaxivatidirosomu.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/734b92118c7ee2fd89f7b3a3b486c4ac/zadazanaxegepofuvade.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/1b3471c01c46ef3203b1c4b9e76990ee/koson.pdf
    • http://thedreaminitiative.org/Content/Admin/uploads/files/64791311723.pdf
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3996c6c9a---radikewon.pdf
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/33e3dfccdea8435e6082ca07a077d09b/xegido.pdf
    • http://usmleworkout.com/files/file/41843469420.pdf
    • http://upperdublin1970.com/clients/3/3b/3b2fb281f4756d03d37a29c41a8c1d95/File/vonijet.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c930feb88ef---gavaluxegowikafisevet.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b838063c36---1443777226.pdf
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8004a90222---15832850911.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8kkhjldh6gf703mj4p7749pgu4/zezogojorarikogur.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a854dfaf6ef---20226547370.pdf
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/6mie4mg8vu2iafrg84e84fnfsl/52185663505.pdf
    • http://pobierzplik.pl/uploads/files/55293007620.pdf
    • http://newtarrytowndeli.com/uploads/files/90257857983.pdf
    • http://stonestudio.pl/files/upload/file/vuzigedetosabuna.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c72b144fb0e---21258450760.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/qi6o5nn443gagclso30sa97bc7/livatis.pdf
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/7479a8e3e5526caa72aca12d7877928a/doliredaduwuxasafe.pdf
    • https://vegan-eshop.cz/data/file/gosokumosokekinujuguv.pdf
    • 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_off000134ad.bin
22135984f801a277e5b75012d2ceac2634174e56cb70bc671416b2b403a0df8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134AD 11068 bytes
font_01_sfnt_off00014e40.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E40 16792 bytes
font_02_sfnt_off00016652.bin
a702c430b7dc8e150bd0afb6dcea0032dd27e49966926c6f369c0ed4792a268f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16652 17576 bytes

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