Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a288ce816b282a…

MALICIOUS

PDF

65.4 KB Created: 2021-06-04 05:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6201c7b595257faa50a17496b7fddf72 SHA-1: d927cbebad2f9eed91d31b98cb329e6f87950e67 SHA-256: 07a288ce816b282ab58e55002b9cff329a52ff063bdd8d74f151138ceed0f9be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external URIs and link farm heuristics, indicating it is designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The file's structure and embedded links align with techniques used to lure users into compromised environments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://drafthe.ru/uplcv?utm_term=afk+arena+starter+guide+reddit
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/31fff610dc037cfe7e3f9f5cf6fbca9d/31523627096.pdf
    • http://wecans.net/_UploadFile/Images/file/58387859448.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ada87b1d4a2---lijololezobagugijuxado.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a5899783ed8---5602055102.pdf
    • http://www.tramag.pl/upload/file/werusafupuxorid.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/507dd66c0b64dfdd0f1b55d26c745b5a/66435406667.pdf
    • http://goldartline.ua/userfiles/file/favil.pdf
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608466c7e2fa9---60275412551.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5eceacace---7554554167.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ghdm6tv4jduaph0dr39pr6ngm1/19518826917.pdf
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ea2d7d03a---vubipinivejamip.pdf
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/ek1op7fitjere7k11vrbf0gk84/batonabatofaporapema.pdf
    • https://glycocalyx.nl/userfiles/image/file/minolas.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160720b77bb832---pimufajevamiravi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c585.bin
ea6c690054262378afdea0a21b7ad279540e12d39465ac4892db9b413e51955a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC585 5096 bytes
font_01_sfnt_off0000d6f2.bin
6507a42bde290ec66ea93e0e0a5fd1a82786b1b690ec7d285c4d99956404c705		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F2 9936 bytes

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