Malicious PDF — malware analysis report

Static analysis result for SHA-256 3460abe53afa035e…

MALICIOUS

PDF

71.7 KB Created: 2021-07-01 17:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b237fe15aeeb0c6d1c6936f9c77ed85c SHA-1: a48a7413df69c66aafa8d63b4f9bc59e21b2f692 SHA-256: 3460abe53afa035ee5e7c2842807313a992f619fbb0107b1c8742f1877089b68
154 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 it is likely a phishing or malware distribution lure. It functions as a link farm, containing numerous URLs pointing to compromised websites, which are designed to trick users into visiting potentially harmful content. The presence of multiple links on disposable or compromised hosting further supports its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6614

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://neodentpetrosino.it/userfiles/files/22486679134.pdf In PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/59a735e9ed9e93a8a4f0a3e1da717d49/55596420330.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083929c2fa34---puvekugotefekigexexak.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/88563315359.pdfIn PDF document text
    • http://tatugigo.com/ckfinder/userfiles/files/ramejoluroroluf.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609278cd6314e---topijifiwuwizupik.pdfIn PDF document text
    • http://exhibitionchannel.com/upload/pekaro.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b680bd76b0c---salurexuzotuwotu.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a85eed35682---59277158133.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/rikiwemujomuteranusep.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b517cc1290d---xeguteridogal.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/6bac8d7627ee18cca0aa2c4f52847b14/45395674803.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/2bf524866abea3df35700f1a4a2d9166/23349596976.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/srv9fqgglc5i611dbthf4e2j44/satawenular.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4904b4274---34609873462.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/giwarimafiz.pdfIn PDF document text
    • http://www.bash.cl/media/file/liwujefegiruvulezevix.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c85d291c6---67583900937.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/os071654bdm3ifbeid9q68aosa/wusovutaligodavimewixuw.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/dejimi.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ddbss71qfn1vbvh9d7uequ7vm1/melobudakolo.pdfIn PDF document text
    • http://tremonttemplemacon.com/clients/862779/File/37586125108.pdfIn PDF document text
    • https://satybharat.com/ci/userfiles/files/ribotuwun.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=quotes+about+missing+your+crushPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10672 11044 bytes
SHA-256: 51b5d1ecb877abfb93877d2cdfff924d14aa2db68d821a0d8e544f3592625681

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