Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee5bd96d15076af…

MALICIOUS

PDF

95.6 KB Created: 2021-08-06 08:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 1555cb7a9539f32433a5d72208287220 SHA-1: 19ee86d97542f9380ccfb7529c062f321352bc82 SHA-256: eee5bd96d15076af3d234b78e3361f4693e1550bc79bdadc15f8e56d1b0cb2d9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.7085

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
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://bhsbeacon.com/FCKeditor/file/53212492683.pdf In PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/07629945e3575c8e0804bb9f55da1aef/89863497736.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf8d2456ff---fufinaxotijatipevojegil.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/h3ubcao6bullgm1cnsqda7kiou/3461994294.pdfIn PDF document text
    • https://www.mmgrowersg.com/ckfinder/userfiles/files/poxefuzenufatixew.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160def551a0d5a---55767820115.pdfIn PDF document text
    • http://dpsszczytno.pl/photo/file/vulumugopopimimilite.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c753878ce---bigegabe.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/desifujatesa.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe3bf2519d---94140881327.pdfIn PDF document text
    • https://lotte-ppta.com/beta/assets/file/fapanorisasawuli.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/a449243b181f7227a42a8a91e1e0aa9f/vefurokomowapomedobop.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bed732cd7cd---49234572123.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160891b3c2d4d6---829380375.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078155ea59de---kudegozumigiw.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160797f7de96c5---varevolagowuwigizew.pdfIn PDF document text
    • http://camonetinternational.com/files/file/muzoxo.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210512075453906.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/4549909e763e37d2f400e823c57a4a93/bubasiz.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/4vhk8haphfnbbgh987u12i19cq/62098225953.pdfIn PDF document text
    • http://indovinandoilmondo.it/themes/userfiles//files/losagewuzinupusuzetixime.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/6f9b92057fcebaac59c06f9f1ed31542/90466995813.pdfIn PDF document text
    • http://drjoecarver.com/clients/49355/File/86015788162.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/efd4495a14ca804b0d36bc348d4e2d8d/rugovijalofi.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/fitulumetazawibati.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=2012+fiat+500+lounge+owners+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A64 11076 bytes
SHA-256: be34078e1ba503d395ecd0acaa2e172427b005f0e749ab7152125ab6d559e191
font_01_sfnt_off0001345e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1345E 19932 bytes
SHA-256: a5f7533cd21cd8269229098770dab219ebebf01a9332b89e1b10a519046fa08a
font_02_sfnt_off00016758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16758 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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