Malicious PDF — malware analysis report

Static analysis result for SHA-256 d206a7f75633282f…

MALICIOUS

PDF

94.3 KB Created: 2021-09-08 09:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9b6c8ef1b78d379eae68e70ba8e638f6 SHA-1: 4ead7c536cb8bb8e9dfaccac531853cb448fb6e5 SHA-256: d206a7f75633282f1180dd55d1729adde6fccfb441d2cb7d6742d1f96944f410
124 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to various domains, many of which are hosted on compromised CMS upload storage or appear to be disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent. The presence of a link farm and the nature of the URLs indicate an attempt to direct users to potentially malicious content, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier clean score 0.2122

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://sharpconsulting.us/app/webroot/ckfinder/userfiles/files/doxulofazazimediganugexof.pdf In PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6fd71a61d1---70492065954.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210803083439.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/86525785287.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9110bc3f8---12259612633.pdfIn PDF document text
    • https://samowar.ch/upload/file/61172664721.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/fsjhaf4pr5f0g12dtq28sf0ij2/gedelapapaliwariw.pdfIn PDF document text
    • https://esterkins.de/ckfinder/userfiles/files/lupedubabufipatetemexu.pdfIn PDF document text
    • http://naturenhuman.com/app/webroot/userfiles/file/vaxapazuvepixesilato.pdfIn PDF document text
    • https://ermolino.mebel18.com/uploads/files/8674482634.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/deweselutabajig.pdfIn PDF document text
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vumezur.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e8292276adb---nekuxosepebologuxigire.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/63672162498.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f3e4375a2---derenufawidapokimat.pdfIn PDF document text
    • http://goldmustang.ru/files/files/mivagujivol.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7aaf2fa10---xonojutuduzosubadonupo.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763b624dbfd---51015005090.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/bemibuvetudovavunifet.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160988be66727a---bogurikonogo.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/qqh39p30ca3jnmngagq9fnfjk2/jikamovixafubo.pdfIn PDF document text
    • https://dannysacademy.com/ckfinder/userfiles/files/jegan.pdfIn PDF document text
    • http://scoutpate.com/userfiles/file/93448035671.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/8d90ea0a242d7ee91cbf5de7e47f83df/jalokukunibexoginenuxir.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bee0f5766c---pelanigererekasa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=compendio+manual+de+la+biblia+por+halleyPDF link annotation
    • 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_off000127d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D6 19004 bytes
SHA-256: 4a3d1cee47b66a6cea3b9eff1c7fc997248b886176012441966a100dae4add00
font_01_sfnt_off0001589b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1589B 10776 bytes
SHA-256: 0edc2761349748daa9b3948c3fd34f9208391f257aff78d9bbd5352f055bc7c7