Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ead89547f3d193c…

MALICIOUS

PDF

88.7 KB Created: 2021-07-18 14:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: be72830865bbf204988263a1bbe0b39f SHA-1: abafa7e9d3e1cc09de79727738dcddcf9710719b SHA-256: 0ead89547f3d193c73c93ec663fcaefe3469f5439376ed1c1a3634788d2656cc
124 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised WordPress upload directories. This behavior is indicative of a link farm designed to distribute malicious content or phish users. The ClamAV detection further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2520

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://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/gukakud.pdf
    • http://absolutelyneon.com/userfiles/file/rajusip.pdf
    • http://extintoresorigen.com/images/editor/paxukatevovajupasesu.pdf
    • http://aroma--style.net/files/files/bivamupuwareruxukuj.pdf
    • http://aep-tc.com/cache/fck_files/file/vupuxawawifojo.pdf
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073043ac923a---saniwonolupuxerapuvu.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/e07d4a9d149acb0e8181e267fcda5238/57104786009.pdf
    • http://anhuizhkj.com/upload_fck/file/2021-5-8/20210508055110622342.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ac81e5dcc99---xitogum.pdf
    • http://chinalabware.ru/d/files/sovutevesovemilutugo.pdf
    • https://luminex.pl/upload/file/fufix.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608131634dec9---dasafazanegewuwevilaw.pdf
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/28489784ef37890c9e3ae2c4ad2deb91/30436986646.pdf
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/nupelefepe.pdf
    • https://tortugafilms.ca/adminfiles/file/85388491896.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608377d3e4428---belikegavazebidu.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608559f83cd65---57301986942.pdf
    • http://renovator.cz/files/file/61178098692.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e27841bba---dodajabum.pdf
    • http://henrycrawfordreunion.com/clients/1/19/1929e20d1ffebcad6d8b2a659e9c170d/File/posasozofexipaf.pdf
    • http://alibabashipping.com/userfiles/file/zobizinepawimubiluzidu.pdf
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/bukeriresudasire.pdf
    • http://compufoxmail.com/userfiles/file/kipebemuwumuna.pdf
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff074ebc70---zelakoju.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/q9ib56g86lsq96btf8qeiokt0f/gelatofanavijibenulepopib.pdf
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b839108eedf---bevigoluditewomesosalori.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=osteomalacia+is+caused+due+to+deficiency+of
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011644.bin
d41bb9786188b51200740fa3f0bea7c80e35e193e35cdbbb7fa12bcf5bd2a952		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11644 10776 bytes
font_01_sfnt_off00012f16.bin
46c38a02a306a2f03f23b6fc61f6a92114cf6e78943b166475d7fc3fb389db0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F16 17452 bytes

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