Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f03e2c52bbc197…

MALICIOUS

PDF

94.1 KB Created: 2021-06-30 11:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4d24cd898d3d62ad91684a3213f2b55a SHA-1: 0a2988552ca745666a09995a0214e34227cc82f0 SHA-256: e9f03e2c52bbc1972c7a78c60df51f16ede8f5f99f74179890860853b13f9449
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to compromised WordPress upload directories. These links likely lead to the download of further malicious content, such as phishing pages or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • 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://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1e0e873e47---20104786172.pdf
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/soluwavuguwifadupomowukud.pdf
    • http://soft-pro.hr/upload/datoteke/81542975867.pdf
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/67ac141f91cb187d1c5be53b5931240a/fozavovuf.pdf
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/gojk0tha5ibie11ppfpm38ou9p/83025376170.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/5d206ae8ad40491a8d7ba8b2187ac397/40163740276.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab62ea9bad---demapepapezux.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc9cccd63b---tijezoze.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a28d83693f0---sukevorijesazo.pdf
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf4e9b04a7---13198330326.pdf
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bff89290fc---87348065607.pdf
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/f8fff59ddcae6adf1b5903e75689eadb/xijebipakadinuliruwagafu.pdf
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb3569c2c0---37375309045.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77f2eacd25---50914155181.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b14d469f72f---rugakazexikuxijin.pdf
    • http://wagnerpc.com/userfiles/files/figifuvitobi.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c93e7761c93---vuwuvurikeveveximop.pdf
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/2pola14r12t91mb20pv04t885d/42344581042.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d8c718499c7---gatovirovub.pdf
    • http://luluscafeonline.com/uploads/files/rusodopatewupupijoz.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d543170e5---37731010402.pdf
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083f3347cb7a---wovije.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=capuchin+for+sale
    • 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_off00010a37.bin
5c6b7ffe038c9ce319c1891fbe682b784871f8168e60c4743667203b36fb783c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A37 18604 bytes
font_01_sfnt_off00013b4f.bin
d579f8e13366944684e7b596bb9f652ee0a6b60b13e365dd87ab9fbb966e93f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4F 10612 bytes
font_02_sfnt_off00015380.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15380 16792 bytes

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