Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c95b17379c983b…

MALICIOUS

PDF

96.8 KB Created: 2021-07-06 16:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7cae9fa547699e633ddf6a1d91ff7183 SHA-1: e124d53b9de6c95e0868baa2efc6b4fe6ab3898b SHA-256: 01c95b17379c983b179cea448d6242e9b84cacf60fe28f5c1c9a95eb78f5db02
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised WordPress installations. The presence of numerous links and the use of 'utm_term' parameters suggest an attempt to drive traffic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://queure.ru/uplcv?utm_term=watch+the+croods+2+full+movie
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/f6a20fd2d7199b9745f838af478f04bc/94916081801.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160dde9e367971---lunote.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f1da67901---garosukudubovijukidugimed.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a95ca8b78b2---taserezimade.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/64a102e8ab2a37ed4c789a0871e06ba9/99880093335.pdf
    • https://tungqibiotech.com/upfiles/editor/files/32559504795.pdf
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/0qt08t39k357u9lf40jv680ni7/8889559365.pdf
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/da1f435a8bbd06080e212ec2e9de355f/lumuxito.pdf
    • http://alnoorcity.com/userfiles/file/wamipazezugerisadefebe.pdf
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/qo0j5u5n8hh8k6obuna2kvdjtd/fedoxodalusewezaj.pdf
    • https://songhong-thudo.com/img/files/solarotiwat.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/339e6c5ug719avgbtlcn44cig5/73456358870.pdf
    • http://jnafarms.com/clients/864068/File/miwiratanomojasajepedosab.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160814122eaf91---44337597012.pdf
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/133e689dcb67fc2c16d5cd25a5a82ed0/puposamiwili.pdf
    • http://www.aportecnica.com/imagenes/editor/file/75393858262.pdf
    • http://waukeganeast1980.com/clients/877304/File/jipifubewup.pdf
    • http://biolabsrl.org/userfiles/files/73624306960.pdf
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c3405ea5a8c---24103739766.pdf
    • https://juraganmonyet.com/contents//files/govudotutenafijemope.pdf
    • http://murphysbeads.com/clients/54316/File/wamaxigirijuvukawanopija.pdf
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/d64ca9b46c9ac1f3552d22ee8d59fc9c/wijufalufopatederatowimu.pdf
    • http://skincarebylaura.com/clients/862251/File/vuvenesonetorekexivobod.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5bd.bin
51e698187f6a7631e47812ff295eddb0bb2f89a053f7ad6fd147fdfd84e6db65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BD 24244 bytes
font_01_sfnt_off0001151b.bin
7433b1ef9e456a300be9b759e9665bc6afc620e22a178d136822e6fdf8f75f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1151B 21032 bytes
font_02_sfnt_off0001397b.bin
4ba7e02a7d9cf1df792adafdf1efa36ed2c43014522e0b48734f2848b73b67af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1397B 10916 bytes
font_03_sfnt_off000152e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152E8 16792 bytes
font_04_sfnt_off00016af5.bin
66561d23f2eb1695a39bb9f88b80d9683298b042bd99b179776941a2f3878adb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16AF5 2248 bytes

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