Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c6e9d6d97c82df…

MALICIOUS

PDF

102.7 KB Created: 2021-09-02 20:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ce7717ecc99323f9c29b59a8aab243f8 SHA-1: 43d822a9c47b95fbf99dc3f8a40a282493c65b87 SHA-256: c9c6e9d6d97c82df78de926e9c17769fb1540604b071fb75b90630cda0fd018b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The presence of embedded URLs and the structure suggest an attempt to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4679

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://drafthe.ru/uplcv?utm_term=major+problems+in+asian+american+history+pdf PDF link annotation
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/38a3e3ae5805e48b203a86da648d8429/podemigivuroledud.pdfIn PDF document text
    • https://nabil-doukali.com/userfiles/file/21611672654.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/2nlupgsj1mngeqj95bvlmssbai/dapodimagisofamikurixega.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/35243038646.pdfIn PDF document text
    • http://angeladaniel.eu/uploads/files/21389017010.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/f19bkotumrob3ta46h4apq7pg3/dogamipo.pdfIn PDF document text
    • https://xigmatek.com/upload/files/jupojikalobuxobus.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/7475a1fd22631307b5276358e1a08107/tanixitukebonusupanur.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/nopajodo.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e8292276adb---nekuxosepebologuxigire.pdfIn PDF document text
    • https://5uempat.com/contents//files/lazifanoko.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608482fd3f206---13148727298.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b2732d493---turigejoto.pdfIn PDF document text
    • http://vatlieubaooncachnhiet.com/userfiles/file/femigunasudadoneg.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/3724288225.pdfIn PDF document text
    • http://magicfood-cn.com/files/20210626124805.pdfIn PDF document text
    • http://bmhs1963.com/clients/7/72/7286fd37811b7a5dece6e69924e4d5ab/File/39999947738.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b97b387628---22893331281.pdfIn PDF document text
    • http://kawoka.com/userfiles/file/77656720764.pdfIn PDF document text
    • http://rockycheng.com/ckfinder/userfiles/files/98954796069.pdfIn PDF document text
    • http://hyperasp.net/userfiles/file/25441629881.pdfIn PDF document text
    • http://xingzhongjing.com/userfiles/file/20210828130701_227885689.pdfIn PDF document text
    • https://panificioilcavaliere.it/userfiles/files/83228121207.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15191 11260 bytes
SHA-256: ccb034e67282238c528f5ef764b870f43b9ba3ff8bb8e4cdc6e4091905381f8a
font_01_sfnt_off00016b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B87 19740 bytes
SHA-256: e23ad86bdab78b7b0175d84e54c9aac523bab0755505d214b5174ce02607a6d4

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