Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f615bb70078d8fd…

MALICIOUS

PDF

42.8 KB Created: 2021-09-15 16:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 7d9426d4a3412bff6e7de56b6cdf3f3a SHA-1: c94aaa83bfcb9e6e51428e18139c2f064d9e38b1 SHA-256: 9f615bb70078d8fd64fc59bd96da0032ca531d79dd1925238a3564292eaeab63
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure, being image-heavy with minimal text, further supports its use as a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 42 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://infrive.ru/uplcv?utm_term=moy+restaurant+chef+mod+apk PDF link annotation
    • http://grotech.in/userfiles/file/zuwifugej.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210905_D0A4923809625F9E.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/46905185104.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/31avihfedfp5uaejfav2ogtmb0/vudilitodifobikew.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/16140159728135---danupiwun.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/nonirigewavotezipaxop.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/75333595923.pdfIn PDF document text
    • http://instit.ac/ckfinder/userfiles/files/67322703884.pdfIn PDF document text
    • http://cherriestattoo.com/ckfinder/userfiles/files/parikinofuvosifojebasun.pdfIn PDF document text
    • http://anadolumatbaa42.com/genelresimler/file/70855457452.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/7648549a335bec32ae14567fb0178bb5/9100281109.pdfIn PDF document text
    • https://altinhediyeler.com/calisma2/files/uploads/29760427564.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-09-06/images/files/vutilizipixilasil.pdfIn PDF document text
    • https://at1-turbo-j3t.com/contents/files/jiporulobutapuz.pdfIn PDF document text
    • http://edins.net/userData/ebizro_board/file/jajubejabokorenofovarok.pdfIn PDF document text
    • http://artetendasud.it/userfiles/files/sofovijazojafimeme.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/18b91e77b2c806950214551b39cd6016/kabisurewonutud.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161419de5261ee---sakatowovupuzo.pdfIn PDF document text
    • http://kodemari.info/data/files/44097048415.pdfIn PDF document text
    • http://ranchobg.com/img/file/romukudip.pdfIn PDF document text
    • http://maremio.ru/admin/ckfinder/userfiles/files/biwiguvatimajamomige.pdfIn PDF document text
    • http://sjzhtchem.com/upload/files/10145283677.pdfIn PDF document text
    • https://fasaac.org/temp/files/govikimabowoxon.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/32069637552.pdfIn PDF document text
    • http://kozelsk-adm.ru/files/uploads/files/46651268748.pdfIn PDF document text
    • https://citronel.com/userfiles/files/jetixaj.pdfIn PDF document text
    • http://burmeseburmilla-allevamento.com/userfiles/files/99409325377.pdfIn PDF document text

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