Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c790e7daa8b6802…

MALICIOUS

PDF

76.1 KB Created: 2021-06-09 08:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d67d53d32c5a95ad91925cae56cc757b SHA-1: 58dcd739bc4459571d9891f5be6348a8d3b0042e SHA-256: 0c790e7daa8b6802e1bfa08162331caf74ddf834d4e985ff7bc80f0e4618997a
156 Risk Score

Malware Insights

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

This PDF document is classified as malicious, with a high ML score and ClamAV detection indicating a phishing or trojan threat. The document body, though partially corrupted, suggests a lure for a game hack download, directing users to external URLs. The presence of numerous links to compromised WordPress sites and disposable hosting further supports a malicious intent, likely to distribute malware or conduct phishing operations.

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://smidgel.ru/uplcv?utm_term=real+cricket+20+hack+download
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160739eccd7cde---kutaridawazopiba.pdf
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/ebef4f06cd21f4362c8e8b0da06f87c6/tezoguvusalosew.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b7b263866---41695398728.pdf
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a604f88db30---divovedadevaduve.pdf
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a851267de9---36937044614.pdf
    • http://www.sport-konyv.hu/userfiles/file/kegijenopimapogewul.pdf
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/9j9tr22htu822gvhuuqvso8m3v/gajerabaxosikavop.pdf
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/3e3da74a50663b55354c8c750a25f4b6/73969839188.pdf
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/897d59c2fb5707cf6f58608c96ff5c89/mewowu.pdf
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a01359a69b---mazivedamejove.pdf
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/snj3qeuckl1n8vijrtbvhn5dqa/29279406484.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160be78ad991be---14107764450.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/n7ic02e0b0101ed8di75g2ufvu/galavazixix.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/ver1eijpmeubnl38f29hck113g/65961310939.pdf
    • https://kede.org/userfiles/file/susimumu.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a7be98111f9---44409866761.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_off0000ec1c.bin
77ab2e88b9610afe7c5d0a645d8a58592a28a024b4a081ba547cbdc011cb9873		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 5288 bytes
font_01_sfnt_off0000fe25.bin
67537a0c95d4a1d4f1c0bb6a452d62ff30c116b3b117c68a6aa52becf61d46e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE25 10988 bytes

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