Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09360846722df3b…

MALICIOUS

PDF

69.3 KB Created: 2021-06-15 11:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7c8619e6e2e34b793a5977e7bb401fb9 SHA-1: 6290832e0517ab6ac34bbd23d7b430dc03d26b77 SHA-256: b09360846722df3b82176d2388e8e8cb7d18636825491d410dba0b4883df1bb1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8570

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 https://medvor.ru/uplcv?utm_term=poketwo+official+server PDF link annotation
    • https://mvpartners.be/images/uploadedimages/file/zevapujeposoresawelubolev.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071155c83fed---61451897872.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1608fdff44034c---wuwabubawewowefunagake.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/9fa17a70a7fcfe02d486eab2ddd8e7c4/tedanovikuposewoxasega.pdfIn PDF document text
    • https://rpitrade.com/ckfinder/userfiles/files/vorarufi.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2980cfb216008066074e8f71760af7fa/fegasim.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6f6019265---sikuzo.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608850e750302---13210268214.pdfIn PDF document text
    • https://govox.co.uk/wp-content/plugins/super-forms/uploads/php/files/p2lft22tgd3mpc65ntv7atkp9f/nugosuwesexanewefiv.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/8p1seaf42l56kchh7j8mjgq0qj/zixig.pdfIn PDF document text
    • http://fcv-bo.org/data/fcv-bo/userfiles/file/rupasem.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/500f4ccdea03020f555f87fa96c51add/55973624305.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/f5c72a28486fb84f61fdc353467819c0/37620560963.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/6eeaa7bb0a7f3dc62f02478dcb46f207/60586313123.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cbae808dce---mabirurabumu.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/76753449506.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/b44b9cb855c219aa45da4e1a4083eb61/70723117090.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF97 5092 bytes
SHA-256: 820c89d6fc9de06284fa639e6b66c19e935bcf5e633ce88e6699156b2d5bef85
font_01_sfnt_off0000f11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11A 11936 bytes
SHA-256: 6072c8e1c462188303615d484473fe66d62192057d0b932b95fd9f5e7cfdc7f4

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