Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a18da87c1d19b81…

MALICIOUS

PDF

83.5 KB Created: 2021-04-28 09:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a60b86a1efac7859689809c4fbda367c SHA-1: 12ee4b2f3a521d0a5340354efbe8d2a3e59f6b5f SHA-256: 5a18da87c1d19b81e36819064fef44aea625cf1138d4489a3bc25d3af23b12f7
154 Risk Score

Malware Insights

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

The PDF contains a link farm directing to multiple URLs hosted on compromised CMS uploads, indicating a phishing or redirection attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. No scripts were extracted, but the structure and URL targets are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6542

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 http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070d5a48582b---jitudufusupikixaluwisa.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16079d59c144d3---4140483723.pdf
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/96c81e7fc0afff842ee3fbba20fbf83c/detov.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/53af96ceda38d83eb7378ff6b4b3ae8e/kivabofa.pdf
    • http://eko-inwest.eu/upload/file/muwunimuwi.pdf
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16075be2929666---53829489794.pdf
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079dcfd788ec---zelavafizogadosoxaperij.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160840d5fd2544---jaxifaz.pdf
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071e03d27d6c---fenadaliraxuz.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca64580540---58780912276.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a66becb1d---87872398512.pdf
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f02f8a9da3---xogikitejomigitupefu.pdf
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/7baba258fdf6f8086405128e102b644e/ginimuvugeduxuvifubir.pdf
    • https://acronimocostanzo.com/userfiles/file/ziniwudaroben.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=best+tactical+rpg+android+2018
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001287e.bin
07927cca1c910b8ca37f6b92939cd8fc4d3327aa15a74588ccae486accbe0fde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1287E 5812 bytes
font_01_sfnt_off00013c4b.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C4B 1800 bytes

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