Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b74300a97efdfc…

MALICIOUS

PDF

86.2 KB Created: 2021-06-29 22:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ea9f7f9a97c8e2f160b51dfb14c276d8 SHA-1: 0f06af8f020d37aa36d943bec55cc865734d8a15 SHA-256: 46b74300a97efdfce3b74904af152ef893937b924844338370f9df0cd220b554
126 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains a link farm with numerous URLs pointing to various domains, some of which appear to be compromised WordPress sites or disposable hosting. The primary function seems to be directing users to external resources, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4450

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 http://growourworld.com/clients/83159/File/xasekuvasudovu.pdf In PDF document text
    • http://midel.me/userfiles/file/81991836475.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/soxuniwanulapotibenaxuk.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/c4bc744dc3e4f1dc2dbf5e2f0a157d1f/kewetevuwirigodob.pdfIn PDF document text
    • http://youngshiny.com/userfiles/file/1621264500.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16077d59f1e2b0---46315264466.pdfIn PDF document text
    • http://globalquestconsulting.com/userfiles/files/rukumogiwofebudoj.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/mib6e4chb30g130sr54gcdm867/37303008209.pdfIn PDF document text
    • http://texmet.pl/userimages/file/gijuri.pdfIn PDF document text
    • http://sbnjl.com/userfiles/files/leneguwevuf.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/412677c4af4724a9d79481d28b720aec/61612674263.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/687e1dc3e03cb2783b697c433bdbefd8/bakovujadopegolazagi.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/77fbb302dce5f34b1b6619be3108a2fb/87677770712.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/db09ed0a558ddc2e14b52c3d6f18552a/69650248437.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607f105cf34fb---rofunuxirizixemanuvive.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/q52h7bgge2mkvj1sfktpt84j9q/kobilisuko.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/be90240802fe75772301614229d42743/mitumikulavubenexuluvo.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076592a9abe8---39881846427.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/nozovoledurezumonafuvebe.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/ejt0dugeshikeart8brokdt4h8/14126528831.pdfIn PDF document text
    • https://landi-bg.com/images/file/ravatosevipifabalowerud.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/tazirakujejunalimaza.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b769d08f973---vipizu.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/matejabipirabofikilove.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/f1d3a59b9e69c71d9070b89a505f56c8/padigelavonitakolo.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/magazovobowojojizunaxepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+do+i+move+text+in+imoviePDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2020ebe5eb---ropiwijitefab.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BB 1672 bytes
SHA-256: 3f1748778f03e7b7e2d3a6c88ca15ef060a02f224cd71155e662fde9dd4c56c7
font_01_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 10176 bytes
SHA-256: 06c0ddc86156fde484ff0da2f6e5e91d260f8c8dc23eda782b359982161d91dc
font_02_sfnt_off0001106b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001287d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287D 16968 bytes
SHA-256: 804ccddd456a64141f993cd44e9b517eee7cc141f59a836eb2b45237e15f52d3

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