Malicious PDF — malware analysis report

Static analysis result for SHA-256 626798b510254710…

MALICIOUS

PDF

97.1 KB Created: 2021-07-19 20:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 36f4931ff9d064cac567eb1323681748 SHA-1: bf3cd10433473956c7ca4df2e1f3da49cebbce9d SHA-256: 626798b5102547104a469059f243a20714858fcdafc3a1c1b85ca8d19ffdd6fb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed for SEO manipulation or to distribute further malware. No scripts were extracted, but the presence of numerous links to potentially malicious content is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5018

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://hocikto.info/userfiles/file/1309744020.pdf In PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/02fa626afb89c6f9478d7cc9eea7b696/28226620288.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f83dbd818---28316233028.pdfIn PDF document text
    • http://magogaralbamoble.com/galeria/files/vujuwojowudokuzitis.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/m6lv2rr1q3cpiap8cs2b3e4u74/xesalobezatojetomosi.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7b7f48385---63745473369.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/f6a2461cbcd004fe2948f410e24364e6/42152407302.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/15597190764.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/rizedivu.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/e1a957db8876c07ee6c3ff53498a6f70/58056694112.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4803bc8fb6---24128606499.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088948144a98---4072377872.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/40351253119.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/92e2c0cd9144992fd0d8c22391f1b5b7/58982451273.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/225e00f81d5340788bd35c64ad5ed331/faluwakiruse.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c9f8a171c---lozobomavar.pdfIn PDF document text
    • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/j2pmcmjplm6gn40oj85vtueln1/fawafidixetigidelefet.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a408ce6705---kevuwogimidavuwirobe.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/ad13907bc432a2ca7a9378706f741b63/84543856101.pdfIn PDF document text
    • http://rhondachem.com/d/files/33726466412.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/9dcd788d1c1eea43e00eb04ba40c145c/sotopoke.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072c2d8b55e5---vavevuxiwamobarizisujemak.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20a0173089---sabebajosokojexijusa.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609230df6280b---83959053543.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0a8e7f7e4---24203033767.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=critical+appreciation+of+the+poem+the+hollow+manPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.