Malicious PDF — malware analysis report

Static analysis result for SHA-256 271d0b8e2e8bf5c8…

MALICIOUS

PDF

62.5 KB Created: 2021-09-01 10:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 179bb9603e4c4b4e48b2e46596f86b18 SHA-1: 558d8de480901e0ea10252042567fae6a9182764 SHA-256: 271d0b8e2e8bf5c8a9a9dbcbf8758ffd461341a9f7b28815f9c50e9a03715bd3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm pointing to multiple compromised websites, indicating a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The embedded URLs suggest the file's primary purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7090

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.urbanwaterways.info/files/58768596768.pdf In PDF document text
    • http://autoklej.pl/app/webroot/media/files/xodemekotuju.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/pimubex.pdfIn PDF document text
    • http://jonesfamilygathering.com/clients/2/28/28a2af4908f4fae7f70f8b91082c1e08/File/jexosara.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/5fc0d675d4787522141d084f2afb32c8/12168474919.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/86466867173.pdfIn PDF document text
    • http://mgtuae.com/uploads/file/garilujozukebemoruse.pdfIn PDF document text
    • http://geteffective.biz/uploadfiles/file/titositerowo.pdfIn PDF document text
    • https://egokituz.org/files/galeria/files/59369736262.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c9b225c94---8732590478.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f7518797545---zuneluborifenigemiki.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/59707047369.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717a46e8e35---46692720765.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aec9d074869---17503274570.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/60ecd0749f48e3b88c703a7f58ca51c7/51667131982.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/91959159356.pdfIn PDF document text
    • http://peterpan1996.it/userfiles/files/firubofawidip.pdfIn PDF document text
    • https://www.tratedu.net/ssss2018/assets/143ad273/ckfinder/core/connector/php/upload/userfiles/files/ba3491d16479fad19e964e09e94145c2.pdfIn PDF document text
    • https://avayemehr-carpet.ir/data/file/tawuxuwofidavumurazixi.pdfIn PDF document text
    • https://yssnewlessons.org/UserFilesTwo/file/60073756073.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c017aab4a9---pesuduvaxinajuwuwa.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bacd8eae86---zibasuximu.pdfIn PDF document text
    • http://janatalnajaf.com/basefile/janatalnajafcom/files/45601888639.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=league+of+legends+all+summoner+iconsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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