Malicious PDF — malware analysis report

Static analysis result for SHA-256 986dddbb1d5064a4…

MALICIOUS

PDF

46.3 KB Created: 2021-09-20 15:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: da965efda4f8088f4c4e6c8209958535 SHA-1: 370b042ef2c9636e364bc5abb41715e28c895faa SHA-256: 986dddbb1d5064a4bdfadfc4f81c72ea97cbbd3c27deaf6651055c1899209028
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable or compromised domains, indicating a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature. The embedded JavaScript likely facilitates the redirection or exploitation process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6676

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
  • 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
  • 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 http://augustaelectricalwork.com/editorData/file/40895769069.pdf
    • https://magyar-logyogyasz.hu/fileok/file/zarugizakomevalana.pdf
    • https://calmoinc.com/upload/editor/file/48061031164.pdf
    • http://pitin-akutsu.com/js/upload/files/rilorederinokosapofowiz.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16132f960abb06---48434563796.pdf
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/bedizadelelibududatogazo.pdf
    • http://pk.mo/userfiles/file/fefonewogokopone.pdf
    • http://papinchess.ru/userfiles/file/90732988142.pdf
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/85815814a85b33b896b2ca15b0881b53/madidabilod.pdf
    • http://pkynfe.net/userfiles/file/45377360626.pdf
    • http://bud-med.eu/userfiles/file/33256521139.pdf
    • http://costanzolegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gutapajuvidiruzemor.pdf
    • http://t-p-fortune.com/userfiles/file/gonetegevisunipufodatazi.pdf
    • http://limobebe.com/userfiles/files/15171328857.pdf
    • https://trexanh.net/upload/files/2665414322.pdf
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/r635ne0jikc9p50uub0v6066v7/niwitok.pdf
    • http://nyett.hk/uploads/news/files/pifekipixe.pdf
    • https://gencerenerji.com/resimler/files/xokubumoxabi.pdf
    • http://metalltechnik-kutschi.at/zarisetupakilosuzenove.pdf
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133421a8c73f---23943111012.pdf
    • http://canphantich.net/Images_upload/files/30717853895.pdf
    • http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/54282173822.pdf
    • http://columb-sklep.pl/userfiles/file/lagofome.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=balanced+chemical+equation+for+respiration

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