Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a22b0d0c0ab0d4…

MALICIOUS

PDF

51.2 KB Created: 2021-09-14 03:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8267c63dc3df693510172df936ec9071 SHA-1: 1407f6f750c612abeceebf6e4f736b3322fab513 SHA-256: 86a22b0d0c0ab0d4869fb1343e340874e7265003f4fdca161a45ede60dadb31f
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning model indicated maliciousness. It contains numerous embedded URLs pointing to various PDF files hosted on different domains, suggesting a link farm or distribution network. The presence of 'utm_term' parameters in some URLs indicates a potential SEO manipulation or tracking purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6358

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 https://textosolutionslinguistiques.com/upload/editor/file/birafedojulegefoxarewoja.pdf In PDF document text
    • http://j1ent.com/userfiles/file/20210914084948.pdfIn PDF document text
    • http://sethhukumchandschool.com/userfiles/file/99466578538.pdfIn PDF document text
    • https://radiosmile.hu/upload/file/90032426613.pdfIn PDF document text
    • http://sowa-architekci.pl/userfiles/files/vineroz.pdfIn PDF document text
    • http://oikoscoccatoarchitettura.com/userfiles/files/4958784510.pdfIn PDF document text
    • http://hongpakthai.com/ckfinder/userfiles/files/jegivejoxomegebanizusox.pdfIn PDF document text
    • http://fusiongrup.ro/userfiles/file/86653432020.pdfIn PDF document text
    • https://receptabc.hu/images_banner/files/xuluxibipapave.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/gudawupinitirulon.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/gozozewanaboxolevijel.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/74702632170.pdfIn PDF document text
    • http://renknh.com/ckupload/files/kalawewexaru.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user//file/_0666785001631361533.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/6239763906.pdfIn PDF document text
    • https://keluargamimpi.com/contents/files/danadulimonatuwuteb.pdfIn PDF document text
    • https://emenu.hu/editor_up/xefimunalukalilolejimi.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16136b9bdcf79c---52007888813.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/96849110040.pdfIn PDF document text
    • http://wirheiraten.de/images/file/83730917866.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/giporamoraripejunolug.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/20285004998.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/jirodidogotufewiboniz.pdfIn PDF document text
    • https://durimawar.com/contents/files/13775620299.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/ziwimadotevefijopa.pdfIn PDF document text
    • http://embeddedhr.com/ckfinder/userfiles/files/gipodijipuzumoro.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/l417blnnnlckt7b7vbgbi6etke/potavat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=instagram+views+apk+free+downloadPDF link annotation

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