Malicious PDF — malware analysis report

Static analysis result for SHA-256 f252df00e5992220…

MALICIOUS

PDF

67.1 KB Created: 2021-05-04 09:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f849b74ba03e67c9b153b8c56e5ad06 SHA-1: 7a4bd5f34505407d0944d57655f6c31c9baf9543 SHA-256: f252df00e5992220a760376ab1cb866e3a179c7061302fba7c88ad2048756cee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8360

Heuristics 5

  • 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.
  • 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://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071dd165055b---verepelepi.pdf
    • http://allaboutdowney.com/userimages/19939595203.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609046518ab50---dugeves.pdf
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7196bacd1---dezoza.pdf
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/38jtu74s49k4gt2lt6301qg2jb/45031000924.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/ror8o8tpup6mlvnpm3o2m1im67/94459116626.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16079271f87bf1---vegunebofidizazirusamajis.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/01446937a3032dc3513b06131e3e4c1d/bixaxurujosep.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160706065586fa---dubivamomula.pdf
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9568cd825---72017928116.pdf
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840ef3b8271---61172471036.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608044704b232---7397383790.pdf
    • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/4d2b47f502916f180a1cf1a587abcc18/87407512236.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f70c49980e---mevapileladurajetite.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757e8c7a8b3---titux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=formal+complaint+letter+workplace+bullying
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f38a.bin
d57ed7e5d05e1e1af5c50c83da3021ec1b302badecfecfcb78c371b80c220eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF38A 5428 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.