Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd177f95ab13939f…

MALICIOUS

PDF

44.2 KB Created: 2021-10-03 23:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 84a9cc9edcbee287f798cdfbb17cb726 SHA-1: 8f422d651e67d067b407c03c2f71b64cf3265906 SHA-256: fd177f95ab13939f38238c96e1c114342d82e1416204b51336dda73255e43dd6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with many pointing to disposable domains, indicating a link farm designed to obscure the true destination. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7104

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sweepinstyle.com/userfiles/file/8302390062.pdf In PDF document text
    • http://ohappy.org/userData/board/file/dunafezi.pdfIn PDF document text
    • https://alwillislifecenter.org/ckfinder/userfiles/files/gelixekumoniso.pdfIn PDF document text
    • https://karapinler.com/calisma2/files/uploads/58996253395.pdfIn PDF document text
    • http://st03.it/userfiles/files/fovopibutigop.pdfIn PDF document text
    • http://go-pxl.com/uploads/files/vowiwujesejuxix.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/cfprktmriv2fge62216okdu9cb/wufabenoruz.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16142f32de57f8---60336530760.pdfIn PDF document text
    • http://alarmy-kamery24.pl/userfiles/file/4263636992.pdfIn PDF document text
    • http://dighakanchaninternational.com/FCKeditor/file/kixodisigofejevubi.pdfIn PDF document text
    • https://dichvumoinoi.com/ckfinder/userfiles/files/84989200752.pdfIn PDF document text
    • https://iringmalaysia.com/ckfinder/userfiles/files/deripuzo.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/nibebofibi.pdfIn PDF document text
    • http://fuerst-architects.com/uploads/file/35691328330.pdfIn PDF document text
    • http://ageddfjtj.pretty-match.com/upload/files/44563756410.pdfIn PDF document text
    • https://e-motorcycle.tw/upload/emotorcycle/files/29332328477.pdfIn PDF document text
    • https://callmarkinvestments.com/callmark/files/potugotikelabojakudurami.pdfIn PDF document text
    • http://boras-sjuharad.boj.se/uploads/userfiles/files/32391953555.pdfIn PDF document text
    • http://dentish.ru/ckfinder/userfiles/files/xusakuwixokexej.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/90921163499.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210906_D2450644337165E7.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/wiwelotetomopon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=brain+out+level+131PDF link annotation