Malicious PDF — malware analysis report

Static analysis result for SHA-256 29930209b1f2d1f6…

MALICIOUS

PDF

72.1 KB Created: 2021-07-06 01:35:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 991f5d0a5c13068cd385710735d3b0b9 SHA-1: e6ce513fbff35e0911b2fc895cc5ddc6dfad95f4 SHA-256: 29930209b1f2d1f653cc757c310ff5114f561b560680dc5d1458e66b920f2446
154 Risk Score

Malware Insights

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

The PDF was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links, many pointing to compromised CMS upload directories, suggesting it's designed to lure users to malicious content. The presence of a link farm on disposable hosting further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6717

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://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb57706754---57750730188.pdf In PDF document text
    • https://irrisyst.eu/files/file/28708728473.pdfIn PDF document text
    • https://geneticapanama.com/userfiles/file/bafosinekuroloroxalut.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c1aacf083---83272295224.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/14ea859e81a9f0d6f50be0eb4dfe02f1/gulemejiwub.pdfIn PDF document text
    • https://condominiobrisasdelnorte.com/userfiles/file/dekagevujiz.pdfIn PDF document text
    • http://zhhyhb.com/uploadfiles/files/gotaxawuri.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872946902a7---11604753400.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c58e57ece20---62208858357.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/b9eeb7dc7d4bbc38cbb399a519e322db/kugosuwatozewugukam.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/6386155517.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/0f428daef6f0b68cc9a4aa4499cbaeff/28999319476.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160893f33d013f---25540501146.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/99975006587.pdfIn PDF document text
    • https://kp-bs.ru/upload/files/xabipizuzegu.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/b1d99ec9f8216e7eee4c37b563075a8f/kofexewelanu.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da08d7afd1---27475195563.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac94d7353e2---nerefupepubani.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16094c998593d7---14216280899.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/bcd07b7437b62bf63a729e274b328693/20163364271.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16072629f5d3b4---58303267066.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/1fd599767b3764584ce9dabc94fa6b07/86565977823.pdfIn PDF document text
    • http://healthywithhart.com/res/file/24449417611.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/69725923187.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=the+story+of+the+kindness+elves+pdfPDF 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_off0000f752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 10668 bytes
SHA-256: 3ef03a51a7a71b244aecd31355611cb2ff662f03f49d527426ea5ac0049c75db