Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a68302e4db47ed4…

MALICIOUS

PDF

90.8 KB Created: 2021-09-07 12:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 5f3f5178832c0e553becd23364d38cbe SHA-1: 2f8f9c569f049a0d5863eb5bddb573ff3b5344d4 SHA-256: 4a68302e4db47ed4b1b97b49d248de0f39c7a3517364c4d8c6fc57325c8b58a5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a raw IP address and others hosted on compromised WordPress sites. These elements suggest the PDF is part of a phishing or malware distribution campaign, likely using spearphishing as the initial access vector. The embedded JavaScript is likely used to redirect the user or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=99+names+of+allah+with+meaning+and+benefits+pdf PDF link annotation
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/b10a5200df7e4f7b7e79894a222397c7/zexobamufukofefe.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/pamugobofebokewiwe.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a5e152f12c---bisug.pdfIn PDF document text
    • http://hp-cnc.de/uploads/files/46470631630.pdfIn PDF document text
    • http://studiotecnicodambra.eu/userfiles/files/sijikolon.pdfIn PDF document text
    • http://feuerwehr-mittenwalde.de/mediathek/files/11612192824.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/24007245639.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ca094bbcbcb---besekomoru.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/7e08e166a7f32b977b1fd3977c6b803b/zefekusapiruzumiz.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03f9307bf4---16412546766.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16073ef48cbacd---tekezutuk.pdfIn PDF document text
    • http://aimic.com/userfiles/file/difopodogujetabugekifuv.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/e9m5vjad1pq7vql722qn6c2c6h/gotisizo.pdfIn PDF document text
    • http://kurumakaitori-one.com/js/upload/files/24800093191.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160927d7dc249d---20960436622.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/zopuzasiregivoguxati.pdfIn PDF document text
    • https://radmangroup-ye.com/rgfiles/file/20974005252.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2aadde14c---57234905010.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/vekepozinegamaxopo.pdfPDF link annotation
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4ce3eb5f1---40978707051.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ca6edde65---36278014671.pdfIn PDF document text
    • https://bustotoronto.com/userfiles/file/93680982440.pdfIn PDF document text
    • http://rotarylaspalmas.orgdocumentos/file/76108863288.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/rokinakavusubavovetekij.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/f91552843e08a81a6143e309e06c0af4/13771992689.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EB 11140 bytes
SHA-256: 645f398b85dfb17810ef3f2167b46f7e7bd4fb27a843610885a014024bea737b
font_01_sfnt_off00010d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001256f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256F 21140 bytes
SHA-256: 240a1712947f3a042a2bc63257a601ed4cdec1ae7f9a4e3a5e945ccdd702a14d

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