Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d2ed5bc2e733ab…

MALICIOUS

PDF

64.0 KB Created: 2021-07-02 11:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7665b983053401b9dde7a68c9367e5fe SHA-1: 3d565804d3c685f4274cba104e663cb5b31f331b SHA-256: 97d2ed5bc2e733ab3f5fc54b74d8478edbb4c1b8773e5b77a4b65deeef60787c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV, indicating it is a phishing or trojan PDF. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and a link farm heuristic strongly supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4984

Heuristics 6

  • 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.
  • 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://catamma.ru/uplcv?utm_term=five+types+of+triangles PDF link annotation
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609661dec2bca---88203032427.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/24232444238.pdfPDF link annotation
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f5e970c8ab---14505094630.pdfIn PDF document text
    • http://sportschoolindex.nl/images/uploads/napuxuretali.pdfIn PDF document text
    • https://werbemittelag.ch/upload/file/nuzujixe.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/cc77be21337beabbdf8b2016b49814c7/falupovifopeme.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9d3a2c64e---fedujesunonuxe.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160960d76bd596---106471528.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704fd82ebb5---37728521808.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608471da3b374---ponigusibepejasuj.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/zikob.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/77695009336.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/gesepow.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/c3f513bc6b8c9f682751d12df7078303/39979807276.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/a77d3bf5ca892fba3ffd898aa677f494/dutowepibamodekepejejek.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/kejusamuna.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/23353065601.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/337r12ujordhpjfphjq6aa45h0/33116318613.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/6043d8fe48c672398e52baf5b74d4d90/neraxefiluwekido.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b36e0d2360---96723181502.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/suec0bnv6fvd74htbddc6u1cb3/buburawodafamixibin.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/kaxada.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c94aa25c34e---10415351860.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/42381712251.pdfIn PDF document text
    • https://parc-hotel.info/file/7070547200.pdfIn PDF document text

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