Malicious PDF — malware analysis report

Static analysis result for SHA-256 649a49fb6b48a9b4…

MALICIOUS

PDF

70.0 KB Created: 2021-07-30 11:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9d7aae0195d36aeabb2b051851dd67cb SHA-1: a7be9c4b47c106811fc62c3d9191ed56507f7b4d SHA-256: 649a49fb6b48a9b4d3a401c11b3a0fcd7541525a6589c0c11421f9a2afcf1c70
154 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting. These links are likely intended to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7541

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://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6b544053a---24491818718.pdf In PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/vugisal.pdfIn PDF document text
    • https://umutisi.com/umut/upload/files/depewavutiwukarun.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/1d5ebd5cdef31585eb0346c51c843b3d/57911057712.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160de4c21510b0---zuzizivozixubowo.pdfIn PDF document text
    • https://hometeamcorp.com/images/usr/dugixitimoj.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607d753d864c7---4493972827.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/35e529616ef44340581eeaaa04572749/namop.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/34819448511.pdfIn PDF document text
    • https://m3csrl.com/file/31317589967.pdfIn PDF document text
    • https://orig-shop-gsm.ro/ckfinder/userfiles/files/fonusaxajetugid.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/d41471e9ede34b65ce5be2363299018c/51601685937.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/42v5pjrtuvu9k6es4b0tccf4s6/mekigozatosolu.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606c910c266ac---nirane.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/f9873b435e2936735c250dfb9e073faa/43971776020.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090714ddd177---92200589416.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/9ba67a26332686759869782fee67c520/81479702031.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb4e5d77c5---93097628390.pdfIn PDF document text
    • http://attlas.center/userfiles/file/xurefofoveg.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/dujulolejisasol.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f32366396c---65319042595.pdfIn PDF document text
    • http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/fodifawupisuda.pdfIn PDF document text
    • http://buddhavehicle.com/userfiles/file/xesanupexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=daily+devotional+books+2019+pdf+free+downloadPDF 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_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 17440 bytes
SHA-256: 65abf26c44a882e55eeaafba5f21cf22e0857b6d1b55c6ea9576347e73803abe

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