Malicious PDF — malware analysis report

Static analysis result for SHA-256 080cc02e09c63c39…

MALICIOUS

PDF

85.8 KB Created: 2021-06-10 01:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 802f5d013a593c43a5e6f5bcf2a526f7 SHA-1: 0a4278ded5a7c1a58b5436e07ab4ff75cf26e287 SHA-256: 080cc02e09c63c39017d64702574b541de82fdd9add8ab9dd4af4b30b14e0bdf
124 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting a link farm designed for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this. The embedded URLs and the heuristic firings indicate an attempt to redirect users to malicious content, likely disguised as an offer for free items.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3836

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 https://catamma.ru/uplcv?utm_term=how+to+get+free+nitro+2020 PDF link annotation
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086336560066---bavaguminozujela.pdfIn PDF document text
    • http://solamsys.com/userData/board/file/pazip.pdfIn PDF document text
    • http://ilovegabal.net/fckeditor/_upload/file/wavakezodusexe.pdfIn PDF document text
    • https://altbuket.ru/files/54645899742.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16078b10ae94e0---sisofibulizixawit.pdfIn PDF document text
    • http://mosjob.ru/images/file/72412279650.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983eaa07310---vipetovugesanabifi.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b954585c1---nutelanunefuzoxazepe.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/fb07846b2aa61ca6d7a3c7e2d045770a/86475349300.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/sr0r74n1cvvspoth839602js8u/4948934518.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/7n487q8amob9fl7bufakj9ld12/58713077976.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/e7d43cc00927866e7740c020ff6c1975/25733215553.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf856400ed---tatuvunetifarepawup.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609201e1393af---4731217565.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE28 6948 bytes
SHA-256: 25565cc9a184a83313d62d897766f82942909d48614504c502de922b52e7cd5e
font_01_sfnt_off0000ffbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBF 3320 bytes
SHA-256: b90b4d6047dfbb6ed4749555bd29ea6c92b7d542caa5d8d7acbdebf028464ba4
font_02_sfnt_off00010b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5D 4844 bytes
SHA-256: 21c5912e8a921e4d22b607281b862034f8e24476dc92cf22280e97421c019010
font_03_sfnt_off00011c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C00 14980 bytes
SHA-256: 94034530e26a467cc34ef2646bb244722ba637d50c579b331c6eef0375b1a2ff
font_04_sfnt_off000148a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148A8 6056 bytes
SHA-256: 56e9a68c3152690f91373062562f0628a79a591e0fd75f2cfcb790e1d1e5a547

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