Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1e63199ac8204b…

MALICIOUS

PDF

79.6 KB Created: 2021-09-01 05:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 93c022d502a8104fdcee3603de3f4740 SHA-1: 8e6997aeb0f242446a912defb27cf45e556b6f0f SHA-256: 6a1e63199ac8204badffa6d82b14904af385e3b0b8db3f58885b631944923d65
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress upload storage or are part of a link farm on disposable hosting. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary function appears to be redirecting users to potentially malicious content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7217

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 https://drafthe.ru/uplcv?utm_term=how+to+create+xapk+file PDF link annotation
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16098777255b0b---91072992832.pdfIn PDF document text
    • https://ibextrail.com/editor-images/41261421154.pdfIn PDF document text
    • http://www.morrisjones.co.uk/EditorImages/file/foziwawa.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/40916647614.pdfIn PDF document text
    • http://upservice.expert/admin/ckfinder/userfiles/files/49485853112.pdfIn PDF document text
    • http://bakerfamreunion.com/clients/1/13/13be4b03bdabdd3a133c3ee64ed6201b/File/88828535469.pdfIn PDF document text
    • https://zahnersatz.pl/userfiles/files/kamupijapikoxesobutozolu.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/c962b86e0897507754a1d06da602808e/semag.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/jiroderi.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa711bc24da---penonosup.pdfIn PDF document text
    • http://allycatering.com/userfiles/26911267966.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/01a23cd2d1a1343c6494eabaa94f2b44/xujivuwin.pdfIn PDF document text
    • http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/nadis.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/86385237823.pdfIn PDF document text
    • http://emke.hu/uploads/ckfinder/userfiles/files/76131207813.pdfIn PDF document text
    • http://manavpublicschool.org/manav/userfiles/file/82115343906.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160ae49441b139---zasezalizuro.pdfIn PDF document text
    • https://e-fasteners.eu/media/file/30555090968.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc4085d5f05---lelosokokorasotesi.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/barili.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/5b4c5af0efd2cbe6293803477557e898/51957039938.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/bitibetafel.pdfIn PDF document text
    • http://utopiasacramento.org/clients/0/07/071cdeedc048305be324eb10ab8031d4/File/liraro.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607dee88216d3---66800783976.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/bcc1eb9ab4d8b77bd45481e89867a80a/ritere.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF5 10472 bytes
SHA-256: 7e59690aa22cd90f541caf104d2452642037745bd64fa4ce46fe69ed398b8537
font_01_sfnt_off000106e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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