Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d9bae372fad948…

MALICIOUS

PDF

85.4 KB Created: 2021-06-26 02:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: ef6aab3e82cd65cc1a8cc3544de23b78 SHA-1: a6892ad9f143bdac84a0fa08ff67f8e21ec450ef SHA-256: 93d9bae372fad94867981bd444e389b841d12715b73bde4b797f1fa54f859141
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, directing users to various URLs hosted on compromised CMS uploads and disposable domains, likely to facilitate further malicious activity. The presence of embedded URLs and the nature of the heuristics suggest an attempt to lure users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/17a63521bf133ceb338ec94ee0c8da96/litinakojozefivom.pdf In PDF document text
    • http://integrotech.com/zdjecia/file/74658014947.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/f5147fdf4221ddf90ac79b64a4bb812b/24391555956.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160702577a7f0f---36253883844.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/nno03n1mfnn5thqeo448sde1od/xenoxewesam.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/vpm83d7f98rg0p77g0mleffkg5/xusibifunilarat.pdfIn PDF document text
    • http://antiochhighclassof70.com/clients/4/4a/4a4d67c83f6236388cbe8d22d68d4f91/File/torovimufazikod.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8515f90c9e---xusilo.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b54448199---xurerepodiguroli.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/9615ef8daf34e88d9c515e30d21ae6e6/10095172193.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/66450675064.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/f500a6a2278f3af090477b8c2043f6b9/sitikurena.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a89a0936646---53933248201.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/euuod0961emh4ieadmukdtjr3u/dakeritegovifaforezasuja.pdfIn PDF document text
    • http://surrattsville69.com/clients/8/81/8122276c22396d7fa0996010cc369f50/File/5562695122.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae69a3c04d3---98176959142.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/12e78d3b232f2d160373785f2c58c7f0/nubefotovobibedajumogivej.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/2d5ee3b21915277d6ae44173ffeab721/60400067083.pdfIn PDF document text
    • http://rana-international.com/userfiles/files/popujuxoso.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/87672141843.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/97948616462.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/c6a9d9523424e5bb6c07a4e6858c6243/livek.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/menid.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/b4b11be4ae48d342a1a05a09910dc843/fufob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=automatic+railway+gate+control+ppt+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9D 16792 bytes
SHA-256: 3cd4182e67b3be5f6d328b0edcb72edea0dea141a91740b63dcc14f25cb69178
font_01_sfnt_off00011686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11686 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E9D 11076 bytes
SHA-256: 6c60dd551d37bf663d91cd76bdf4fd4081014a6326ad3dc8cfc1a4de3584efcb

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