Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68a9bf47c1a9c45…

MALICIOUS

PDF

77.5 KB Created: 2021-09-03 05:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 636a9229c6b00882ab2e0a62fb05b3cf SHA-1: ee68ddd27f25e7737f6931a3d0dfc766ce561199 SHA-256: d68a9bf47c1a9c453a75e03928f2414d7f83b328e3d28f4dbdce490c1ebe3ff1
124 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to websites hosted on compromised content management systems or disposable hosting. The ClamAV detection indicates it is a phishing trojan, suggesting the links are intended to lead users to malicious content or phishing pages. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3768

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 http://cuboni.com/uploadfile/hong202108081930544131.pdf In PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/85dcb27fbf1855548628335357185e84/66634168086.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/bamuwemepuselisove.pdfIn PDF document text
    • http://prime42.ru/userfiles/files/jixidovadedewawazesulor.pdfIn PDF document text
    • https://123natura.com/stockages/files/mobuwino.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/dc816edf94ce850d39e9794117747f87/migugolawimugolatare.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/nitutizap.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/nezoxewano.pdfIn PDF document text
    • http://luyenthidhcanhsat.com/Images_upload/files/sesoturotezuxeluw.pdfIn PDF document text
    • https://mayphotocopydogia.com/upload/files/kagazupelotis.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9f0958a8b6---basezigupumijisazefunes.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/43060150622.pdfIn PDF document text
    • https://dolphinsolutions.net/ckfinder/userfiles/files/16766052410.pdfIn PDF document text
    • https://bedandbreakfastchia.it/userfiles/file/naronajelizuravaravegu.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d0a70c454---93826183356.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/95716474843.pdfIn PDF document text
    • https://contactfm.be/userfiles/files/49512512082.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e76bdd3f953---66664443781.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/4436446615.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/b9omodkch37isirbbjlkg0en77/17893207226.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/tixari.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160700085353dc---30660070510.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/25051707503.pdfIn PDF document text
    • http://asiancfea.org/userfiles/file/kunavejutoleva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=difference+between+value+chain+and+supply+chain+pdfPDF link annotation
    • 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_off0000db06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB06 17340 bytes
SHA-256: 8eebe73f3aff7369165ac7a886d6b24a86caa91b8608acaabee760fbb9300a18
font_01_sfnt_off000107b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FCE 11104 bytes
SHA-256: a9e5fdbca63c358642337fec0663dc5934aaa59032e8db0e9cd50e1cf0ce76fa

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