Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84147ee28b9443f…

MALICIOUS

PDF

80.4 KB Created: 2021-06-01 01:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 578fcb233eb86f176a271c6e498ef129 SHA-1: 7f2f4ef7dbbf34165c61240e93c3776c2e536319 SHA-256: c84147ee28b9443fe9da439d22422e9212ef51184dc91729a338e3b5efc70dd7
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm designed to obscure the true destination. The document body, though heavily obfuscated, contains references to movie downloads, suggesting a lure for users seeking pirated content. No scripts were extracted, but the presence of external links and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8479

Heuristics 6

  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://palyavalaszto.hu/teszt/upload/file/36675064472.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/c851c1abf08bbf093c696e1c411970d9/pazojagobosuzodejifo.pdf
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc2cdd9a26---gisidifuvugojadu.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/05i3sf19hlc4bv7g5vdep6e5l0/98436755272.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/r9s8fu652k28diq8hokdsc5lh7/lilevisemug.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923b8482573---99572252049.pdf
    • https://mimpi1pusat.com/contents//files/82094548976.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c12f3e1dd---92842212897.pdf
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/4f0b454d8838f72d35c22e2e119b79c4/15924853962.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606f72a753c82---68856061627.pdf
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096bf2b7de1a---11207150052.pdf
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/5a30461064614a1ff4f19c20b365e3ff/63040098701.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/d1e2d208da3718024a6be8c877d8ce83/gukud.pdf
    • https://kimtuong.vn/isc/public/files/fckupload/file/20480158478.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=chal+mera+putt+2+full+hd+movie+download+filmyhit
    • http://scripts.sil.org/OFL
    • 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_off0000f102.bin
85e46bf6607a663fb55815fc8ade5bdca6cb70d6c25bc84da8afb52c5c482725		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF102 5392 bytes
font_01_sfnt_off00010349.bin
b33c3b22e5090baf2f8d57e2935cc8dfe4cb3e19f5fbdaf3ce38ce6fb7009792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10349 11412 bytes
font_02_sfnt_off000129f7.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129F7 16036 bytes

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