Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e7c87e9c80dfe8…

MALICIOUS

PDF

64.0 KB Created: 2021-09-08 02:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 569a736b7d4fe3239aceac5bfd253a5b SHA-1: f822ed5dd5fe0496120a6c696947733e5a941f44 SHA-256: 32e7c87e9c80dfe8929c019b2da642b80c6824d504b92a287bec7f31fae8c907
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely serve as a link farm to distribute phishing content or further malware. ClamAV detection and ML classification strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7025

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://synerhu.ru/uplcv?utm_term=terribly+tiny+tales+book+pdf PDF link annotation
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7cf0ca889---sitoxaburise.pdfIn PDF document text
    • http://oryginalnedekoracje.pl/userfiles/file/wositawulagixi.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/zugagagozegi.pdfIn PDF document text
    • http://hawks79.com/clients/85064/File/gedofozoxokulat.pdfIn PDF document text
    • http://hanasushichoice.com/uploads/files/19713005682.pdfIn PDF document text
    • https://candbco.com/ckfinder/userfiles/files/notixidamevetot.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/kqqgqr8uhrvnkoqpl2502aalu8/jakasewekiwawop.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/1u353rs29c12d7lgrcs5osrbvq/77619036227.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/giwinuzabo.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffb7ba527f---zonowalunop.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/fugomulepo.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/gusotipatupo.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20210826061623.pdfIn PDF document text
    • https://mollis.rs//files/65170069366.pdfIn PDF document text
    • http://vce34.ru/attachments/file/45298292535.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/fd6786e7202d0c2840d7bd6d39f040d8/mulabidadi.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/daratamuvenulufunolen.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/c02a4904d3e45f38658f2fcf8120ae67/41963687007.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/dafawe.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160bc450b70378---2735704794.pdfIn PDF document text
    • http://cateringkieuan.com/uploads/userfiles/file/wutufijekav.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb4e4d4f55---rafajakek.pdfIn PDF document text
    • https://delphin-bau.com/ckfinder/upload/files/kemuxupeg.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/da7950f738a03d762296d2722b6fca39/49635472562.pdfIn PDF document text
    • 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_off0000d27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27D 10800 bytes
SHA-256: fca1d2b0c0e8883353530d752afd1efb0afeb20fdd450220dd6432d3569ef319

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