Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d49575ecb40745…

MALICIOUS

PDF

98.6 KB Created: 2021-07-08 11:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 10ff7e03c5140225026cd1188468e9c5 SHA-1: be79c39c2424b5ddcb52e1baa6d8c398110db7ce SHA-256: 02d49575ecb40745bbc04a282afbaa5528cf6dceaf0245c8686408dd4a7cf27e
176 Risk Score

Malware Insights

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

This PDF file contains numerous embedded URLs that point to compromised WordPress sites and disposable hosting domains. The heuristic firings indicate that this PDF is a link farm, likely intended to redirect users to malicious content, potentially for phishing or malware delivery. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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
  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=what+are+the+best+colleges+for+teaching
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609bfb8b5bba7---jaxifegapegesisov.pdf
    • https://dancleland.com/img/upload/file/55452526293.pdf
    • http://onishi-kyosendo.jp/archive/97037127508.pdf
    • https://airbays.com/userfiles/file/18013325239.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160997c31b2e77---15413907651.pdf
    • https://bonafideonline.com.ar/wp-content/plugins/super-forms/uploads/php/files/307ea00792ea7e92845174c9d28e4d93/17553500262.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/1df060c97d7ec9e6c7dc510be02e3b91/55690939978.pdf
    • http://khanaphatgroup.com/UserFiles/file/lolowu.pdf
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/784b76594918121572afd5025187ae40/xujajaxidifobonaxulinu.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/b920796a767d3065721e8bfba613aa30/12082431604.pdf
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd668dc323---sozabibe.pdf
    • https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/82568291428.pdf
    • https://bursakaynak.com/userfiles/file/42762642624.pdf
    • http://gemculture.com/userfiles/file/82917316061.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b90a134e2---pasoroniwetugisiwozijep.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a24b36adb2---gotimavukonusalokonik.pdf
    • http://myapartment.de/web/editor/files/pisadexologakakakatas.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/4d94bc8b56251af95e0cd1b48901012e/pumogozopikanuxobe.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca8c7aad78---regegewibafexojanow.pdf
    • http://vanxuantravel.com/upload/files/dulepotebifosijil.pdf
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/6bcd209e1f5f1cd14f1aef3378c8c367/zuzubufijokugexivoxiput.pdf
    • http://iseveranscopy.com/upload/editor/file/81846919524.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d6cf8cf1927---najanukuzowugexezotivam.pdf
    • http://prestinoequitacion.com/imagenes/upload/files/55466900651.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf4db50508---fujakomubixutof.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160be3877cd20b---buluwesejemadekod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fc8.bin
0be9f31080c1218fd5fbe2adcd9458366cdea067968ab903c168aef8ca63f7b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC8 10748 bytes
font_01_sfnt_off00013877.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13877 16792 bytes
font_02_sfnt_off00015089.bin
01d289ad08754450cedf477d6fbccf5dd6183c5a41e38276877379a73b1bf33c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15089 17352 bytes

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