Malicious PDF — malware analysis report

Static analysis result for SHA-256 de06b02aa2069c47…

MALICIOUS

PDF

73.4 KB Created: 2021-08-24 21:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7ceba7b72874bc572302f2db22803c35 SHA-1: eb816e20c0a2fb744daf06aa217cd38e178ad3ce SHA-256: de06b02aa2069c4759ef044eaf3f3b81af2bec14d2a5205b7a26db0fae5d4184
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many pointing to compromised WordPress sites. These elements suggest the file is designed to redirect users to malicious content, likely for phishing or to download further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3973

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=grand+haven+9+showtimes PDF link annotation
    • https://allcreaturesinc.com/files/files/guxufozujojusejanarenim.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6a0c68003---45672902797.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8d0cb626d---2460504441.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819b26a7c73---jujopimomominodemixenira.pdfIn PDF document text
    • http://hasdeu.md/data/userfiles/files/doziw.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/10657597364.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/lopilutejigivuxep.pdfIn PDF document text
    • https://tgvl.in/uploads/fck/files/52283226595.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/59a4e8dd8930fcfba2be7fb64775cde9/ripororizeboxojaki.pdfIn PDF document text
    • http://www.hussco-steel.com/husscofiles/files/95050947026.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a0dc9a27b---romodixufogofusu.pdfIn PDF document text
    • http://minhanh.com/files/1458053777.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/sobuxoz.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c08f71734cc---87075035949.pdfIn PDF document text
    • http://baovethanglongmb.com/upload/files/sizepebemudiki.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/10174875328.pdfIn PDF document text
    • http://mackyz7automotive.com/js/upload/files/60188844599.pdfIn PDF document text
    • http://mamaskitchenorder.com/uploads/files/87928503453.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610b732ddc67f---44925750633.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/fetobefopiwelajibagenurod.pdfIn PDF document text
    • https://osakadentalcare.com/contents//files/wikakef.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/3b93993ed79f2b7058e204dab9195737/15385334591.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce64890b8e---guvujanokedovovazola.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/24361947516.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB45 10824 bytes
SHA-256: 48a4b22bcacd9d30e6d0934ccb747c96b3493c59b1909ce139a87b26efe787c4
font_01_sfnt_off0000e425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE425 17000 bytes
SHA-256: 596c9bd0a905c7c9d8d78e7e77ddfc31585d45fd32d7e88957b26fee0749fc59
font_02_sfnt_off000110a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1