Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e6803094cfbb66…

MALICIOUS

PDF

51.1 KB Created: 2021-06-30 22:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f5399f110cbf875aec8daba3b00eaebd SHA-1: b21a08a001d32f0c8e1a248391058229739bdf91 SHA-256: c9e6803094cfbb66549d9739e37ba973a0d8a2cbf49c4019499bc66c321d75ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links are likely intended to lure users into downloading further malicious content or to phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

Heuristics 5

  • 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
  • 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://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/68a6467b9d99038865cba708c127e39d/69880980728.pdf In PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5acfbab9e---sifepanijewipesuvejo.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/f6afa983925ceb6ce8d5a340d9c02ab8/gufejozifujitobatufojetig.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/jh13itermpp0nkijobqalpej83/difumoga.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/46429176451.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/37088390155.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/28072018338.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/dokuw.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6ab71a6ff---wiruvuvutafaxidowofub.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/kelezusevuwomodigerow.pdfIn PDF document text
    • http://kotolantopeni.cz/file/nerosurebopimewegi.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160921946b0176---42501568805.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a53483d952---97200661061.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/zavojadojomuzewatelojaf.pdfIn PDF document text
    • https://pakistanchristiancongress.org/userfiles/file/8173907842.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/kajazonozabetani.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/c2606090e23c23576d9523a536f75d49/sufegojuxidafunuk.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609837b2ebddf---mexefenexolopip.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/kawivosinidivesusitexa.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c5e921c62---59645293252.pdfIn PDF document text
    • http://kasargod.net/uploads/file/10949514442.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e68e89a9a---90250496491.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=sales+management+simplified+pdf+free+downloadPDF link annotation

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