Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0bf27c3c5f66eb…

MALICIOUS

PDF

62.3 KB Created: 2021-09-28 12:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3c7978cdc7d726cd9fabfa00aeec8f4b SHA-1: 51e9dba9767e31967812c42454c9f0fe311af2a4 SHA-256: 6e0bf27c3c5f66eb155d339c45e56c14ac301c491ee2ce27d4d0ae1dddb31a65
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and a machine learning classifier. Heuristics indicate it's an image-based lure, typical for phishing, with multiple links pointing to potentially compromised WordPress sites and disposable hosting. The document body is heavily obfuscated, but the overall structure and URL patterns suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5774

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 62 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://bandotrading.com/uploads/file/kanumaxuvamajax.pdf
    • https://printjet.pl/pliki_user/File/99044267263.pdf
    • https://ruta.hu/ckfinder/userfiles/files/waxizasixiwa.pdf
    • https://implantologie-deva.ro/app/webroot/files/userfiles/files/65582052299.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152e63befcba---fedanapavapu.pdf
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/edc07ac8b1cb619901cab6a12e34bcb9/sobuxojifib.pdf
    • https://sowlindia.com/userfiles/file/83198670641.pdf
    • http://chono.mn/uploads/userfiles/files/30475780152.pdf
    • http://domario.ru/userfiles/file/11199649767.pdf
    • http://autobedrijvenindex.nl/images/uploads/xivubudivegofevoxukoz.pdf
    • https://laznia-radom.pl/userfiles/file/navagelo.pdf
    • http://thietkewebsite.btccorp.vn/uploads/files/69970752765.pdf
    • https://livres-arts.com/ckfinder/userfiles/files/rujodew.pdf
    • https://edusfera.pl/upload/file/serumutoba.pdf
    • http://jamesandsons.ca/userfiles/file/jafunorufat.pdf
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e616537491---nemokunep.pdf
    • http://hankyunget.net/userData/board/file/58522999842.pdf
    • http://circolosilverblufitnessclub.eu/userfiles/files/sibosifumixexezarodusumuv.pdf
    • http://abwnickersonplaza.com/uploads/files/63661000852.pdf
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161347db7ece19---suzurigozawo.pdf
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/92896719781.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=streaming+naruto+the+movie+the+last
    • 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_off0000ae98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE98 16792 bytes
font_01_sfnt_off0000c6af.bin
873ed929c234a2bee5584087dc5c64d0b5092041aa6067d30495f0b608980194		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AF 10796 bytes

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