Malicious PDF — malware analysis report

Static analysis result for SHA-256 657d0c43790517ad…

MALICIOUS

PDF

64.0 KB Created: 2021-04-26 07:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1653da14bf9575a2b9a838623a73ce97 SHA-1: eeba854e3bcf4a97e217b7950afad3ca2d3019bb SHA-256: 657d0c43790517addb1b5fde1957a3cb239990c798a4d9b591b242fe80e65b28
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a large number of external links, many of which point to disposable domains or are hosted on services like Weebly. This behavior is indicative of a link farm or phishing campaign designed to redirect users to malicious sites. The ClamAV detection also confirms its malicious nature, identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3860

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=how+much+does+it+cost+to+scan+medical+records PDF link annotation
    • https://manobafezelibo.weebly.com/uploads/1/3/1/6/131636879/japegax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_602c30dcc9db2.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/moxinawelas.pdfIn PDF document text
    • http://finansi-7.online/nefusibibubezimalopuvivoqdti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374843/normal_605f37e7e416d.pdfIn PDF document text
    • http://copyrightviolationcenters.com/6178381461358ufn.pdfIn PDF document text
    • http://moreprodukti.com/43901491651hpxvs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_601d5895d25a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ff511337b7d2.pdfIn PDF document text
    • https://topekaje.weebly.com/uploads/1/3/4/1/134109010/nogerivuduxa_latani.pdfIn PDF document text
    • https://bovusobovazova.weebly.com/uploads/1/3/4/5/134596491/3508323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469378/normal_6025be9a488b8.pdfIn PDF document text
    • https://vowawekalumuz.weebly.com/uploads/1/3/5/3/135304311/zobasad.pdfIn PDF document text
    • http://dkmz1.club/barbie_doll_wallpaper_photosuqeyx.pdfIn PDF document text
    • http://wisecreditscore.info/xagowovisoxoxoratogew1a2gy.pdfIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_8283c7ccdf624bca83110a4e102fac18.pdf?index=trueIn PDF document text
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_a352be7c883a40cd9d7e5724fb410edf.pdf?index=trueIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_3e837783d40a48d486cb783253b04443.pdf?index=trueIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_bc8c11a4a60c44afb56db43044b7ea31.pdf?index=trueIn PDF document text
    • https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_f848ad9d0fd349e4a5a2f2014bf5519d.pdf?index=trueIn PDF document text
    • https://8d275f60-8e36-4e70-8574-b6d542a617c4.filesusr.com/ugd/dbf6c2_3d730c60f7a04222bed7d1a7f6f2bafe.pdf?index=trueIn PDF document text
    • https://467375c7-a7a6-4806-a9b7-892c2a528f89.filesusr.com/ugd/911174_804b88700a24435891307c8908ee898b.pdf?index=trueIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_d4824121a3d84bfdabe86e64292a2d80.pdf?index=trueIn PDF document text
    • https://351e5f87-f9e5-4015-92cd-d601692b9ec3.filesusr.com/ugd/a0d0d3_e2fb02d3bb36451e95bfd09c1d850fb4.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_4efa91838a1c4350ae0e771f419f147b.pdf?index=trueIn PDF document text
    • https://1c896d37-30d1-4b4d-9537-98f963aae812.filesusr.com/ugd/865d50_6762efd9b64b41c0829ab87eea06e76d.pdf?index=trueIn PDF document text