Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e0d5e45d906053…

MALICIOUS

PDF

41.6 KB Created: 2021-09-03 10:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: cfd95c424d938f85add4b86c48f7cb05 SHA-1: 8a41ec1365d8d9fe3a701cb690fe870c480fc90f SHA-256: f0e0d5e45d9060539c011dc453b9cc9ddc9a285fdf2a691567ef17795bcb07b3
174 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 and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7020

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ec1e539d887ee13012a138c3f20bb345/noxojawebogomibogutixinil.pdf In PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/e2a85e661e16bc8b42407b97ffd6147c/mukekebadowax.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072e5096f6b1---66540866987.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087734713c9f---gufodofedefaxikutudise.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/0ed082a721da4aa0563fe84dbd30dd9c/xosevotolijumajubina.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/d4b25cccc0baa3d23518dc004b5ea8c9/12894847533.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/81072935079.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/35440737522.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607824fe25190---bazidasikibefujapeb.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711ba18e880---bofefugaropipamibu.pdfIn PDF document text
    • https://plagij.at/ckfinder/userfiles/files/kaxumejulobufu.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/42969343668.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609b39f92d029---10468059084.pdfIn PDF document text
    • http://4x4autok.hu/userfiles/files/65953394688.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609869aeb1464---45043052720.pdfIn PDF document text
    • http://cherishedmomentphotos.com/clients/8/84/84fe84b553acfcd191e166b7401b6f02/File/navipojorotajon.pdfIn PDF document text
    • http://apvn.info/userfiles/file/1900762718.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-11/20210511121613100796.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/serewiwudozozoz.pdfIn PDF document text
    • https://rsebolivia.org/userfiles/file/1946212593.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/9qn0079lv3mr1au9ldbb7hg62s/30067742463.pdfIn PDF document text
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210828171539.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/202171413243393.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=saxon+genitive+worksheetPDF link annotation

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