Malicious PDF — malware analysis report

Static analysis result for SHA-256 92eed7694ef7e30f…

MALICIOUS

PDF

67.8 KB Created: 2021-07-01 13:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ec4e31b78c395bbd9d473a7804ede9f9 SHA-1: 0d0bf893c3072d42b208c86c01304cec62ebf713 SHA-256: 92eed7694ef7e30f2b169f59c6c3fbe9b674e0eab688c0da2acadeeb463c5634
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable domains, suggesting it is used for phishing or distributing further malware. The use of compromised CMS upload storage and disposable hosting for these links is a common tactic for evading detection and attribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9192

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://oniceh.ru/uplcv?utm_term=silver+melting+point+celsius PDF link annotation
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072efa84ad69---49514116443.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0be0a7b64---fuziruzusa.pdfIn PDF document text
    • https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/tozev.pdfIn PDF document text
    • http://emannsltd.com/userfiles/toripofinosepodigifogaj.pdfIn PDF document text
    • https://loctra.net/userfiles/file/92460956887.pdfIn PDF document text
    • http://k-souz.com/userfiles/file/29081350147.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c2a26a2b3---neridapidogudevaganula.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099606ab907a---74932293119.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f807e65f5---fogaxopoguxaropadib.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1768a6e51c---fimasitesisedabasaka.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/8341b2257b05a24f6fa8cac3fdc2da51/fuxaso.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77654f3d77---27474712017.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdd5f6e46a---26565869629.pdfIn PDF document text
    • http://biurod9.pl/public/userfiles/file/lerop.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16077c1678a474---93130260545.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5fb145cce8---suzivogor.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/2i1k894n8jcqjnai9fl9kdbm5k/78688484967.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608994042ddb6---xugolafepopubikuraj.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/zixubur.pdfIn PDF document text
    • http://herve-coiffure.ci/files/53332770308.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/jojibugebelilesubogosiwab.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC541 10796 bytes
SHA-256: f30b30637268a72834d3939f0f7258fd8e19f0dd2163a74a5f362c5b680e446e
font_01_sfnt_off0000de19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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