Malicious PDF — malware analysis report

Static analysis result for SHA-256 8142dcff221286b4…

MALICIOUS

PDF

46.7 KB Created: 2021-06-19 20:55:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3433468f6a7cfae1119f330df264cef2 SHA-1: 403e3e63c62726d32d52f979561acbc950f40e49 SHA-256: 8142dcff221286b49cb13874490a63c933f7098fc8265340d6a73932f521eca3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm hosted on compromised WordPress sites, designed to trick users into downloading files. The presence of keywords like 'nintendo switch emulator apk' in the URLs suggests a lure for potentially unwanted software or malware. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7569

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 https://catamma.ru/uplcv?utm_term=skyline+nintendo+switch+emulator+apk PDF link annotation
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c3f31948a39---fanukasojesili.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b0531500eab---jonokadurituzovesirunama.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/b178739efadeac533f7dc334c67215a6/sotojaxowokavox.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bbdca8a1f1---14123558563.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/gtcqsk1kofkog68blku3rpnnf3/96615229533.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/fuveguguvubek.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/zewisigudojuwodotitav.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2ea45ade4---mupavuvo.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607a222022827---vupitarazenuvonomuf.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/70j4vuevsbo8q5entvlno9a8k6/3310927019.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/5550a4c099de7d60dbf26a020351da88/liberuletapozawaravomuj.pdfIn PDF document text
    • https://living-stone.lu/userfiles/files/36847616036.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/5b3884eb8373f3cc4d547c852dbef80c/bokixapikalu.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b03c128b92---fofikaw.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/norirepaxisijobum.pdfIn PDF document text

Related samples 8

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