Malicious PDF — malware analysis report

Static analysis result for SHA-256 63eb22e6c0f285f4…

MALICIOUS

PDF

70.7 KB Created: 2021-08-07 18:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5f4a9e148b0c6ca1fec90d18d31bd8bc SHA-1: bf55c6bd61e91caa086254b34479ef386cb1c4d3 SHA-256: 63eb22e6c0f285f4773910c43e1e908be65db5ff45925e33230166d5f19a1075
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. The file contains a link farm pointing to numerous compromised WordPress upload directories, suggesting an attempt to host malicious content or redirect users to phishing sites. No scripts were extracted from this sample, but the structure and URL patterns are consistent with common PDF-based phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

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://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098703871242---20632417794.pdf In PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077af6c22bcd---23345212002.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e138bfdeb08---lusudagipagik.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/97797856056.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/94207677107134500f8f609c85db9c59/67450702245.pdfIn PDF document text
    • http://kuppersbusch-center.ru/uploads/files/91886919508.pdfIn PDF document text
    • http://penzionriverside.cz/files/file/xisuwotufinapitobeted.pdfIn PDF document text
    • http://drwatsonsr.com/clients/2/2b/2b9a0cf27321ceab3a47fbd10bf94d34/File/36752134772.pdfIn PDF document text
    • http://spiregene.com/image/files/20210731_151820.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fece2816c5---15628515950.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610e6fdae94a0---55088246839.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/822d15c1b1455c0ba326e37c6199e401/nokiniwevogu.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c84690ab87---68593084998.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/68b989f843e0c3499568586eca405dd3/29060990653.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/692fce99f6e97ca23fbec2343621273a/jirikenufevobemizesa.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/db5625d2030312882d91252b75734411/93103065162.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/35133858954.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/e783f27b64999058d4c382913618a492/40787027950.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caa6003d6c---32713684141.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b728439a937.pdfIn PDF document text
    • http://blackshirts1961.com/clients/7/71/7137ee3fbd99c17d296746b31d66a47b/File/5636563355.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c07abdac---judipupibewivaxamif.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/saxifopixufamevozonavu.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c37b5821c6f---90617372258.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/1f4fd873cdb19bdf30a542a945fcdea7/20717511169.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=el+aleph+resumen+de+los+17+cuentosPDF 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_off0000ffd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD2 10872 bytes
SHA-256: bcc3ffb68bd04a6fe8b4c5ae8f23e10b5a4458f764d9c4c2f9a43eeb321c5640