Malicious PDF — malware analysis report

Static analysis result for SHA-256 9418338d6498e7ee…

MALICIOUS

PDF

54.6 KB Created: 2021-09-29 07:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: e3aec3653928bfffb8a7e4f9996b9c69 SHA-1: 053592fceca0e03436bfbf6d2a3a6b2d2d46acb9 SHA-256: 9418338d6498e7ee60ceeab34110ef98da94078456120f9296b2f3d725397dcf
132 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The heuristic firings and numerous external URLs suggest a phishing or malware distribution attempt. The embedded JavaScript likely redirects the user to one of the listed URLs, which are often used to host malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8104

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://oncallanatomist.com/ckfinder/userfiles/files/36567901830.pdf In PDF document text
    • http://thainightjob.com/ckfinder/userfiles/files/52943129175.pdfIn PDF document text
    • https://fa-vietnam.com/webroot/img/files/59135471006.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/tafubakuganedezusunigo.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/81532799063.pdfIn PDF document text
    • http://titibbs.xyz/js/ckfinder/userfiles/files/vojopovapebosijufapoze.pdfIn PDF document text
    • http://vitccorp.com/uploads/userfiles/file/pulapadorixisizunenugo.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/nuvijinitenenib.pdfIn PDF document text
    • https://livres-d-art.com/ckfinder/userfiles/files/9352763824.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/jepivilukapavixezawajumax.pdfIn PDF document text
    • http://mps-india.com/userfiles/files/tugesinebotol.pdfIn PDF document text
    • http://abwvictory.com/uploads/files/dalunekovijere.pdfIn PDF document text
    • http://nanjing.chinatupai.com/web/js/ckfinder/userfiles/files/gubogirolala.pdfIn PDF document text
    • http://artvideo74.ru/upfiles/files/51366149153.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/soxana.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/88418716221.pdfIn PDF document text
    • http://theprojectmanagement.guru/cote_dor_import/admin/ckfinder/userfiles/files/45565020655.pdfIn PDF document text
    • https://franchisebusinessadvisors.franchisebrokerwebsites.com/broker-site/files/files/panavirutub.pdfIn PDF document text
    • https://oncetrabzon.com/resimler/files/18873180944.pdfIn PDF document text
    • https://support-trevianum.nl/userfiles/files/naronugojojotalaxij.pdfIn PDF document text
    • http://guowangcable.com/d/files/mijoku.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/18730084177.pdfIn PDF document text
    • https://leanuslab.com/UserFiles/file/74404164758.pdfIn PDF document text
    • http://margheritango.it/userfiles/file/fojugibanerajulimerojene.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=cool+math+games+mobile+moto+x3mPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F1 14836 bytes
SHA-256: 78f0f9e413253cbb5349df54f003b2a36430b3a9439250fe9912145d8bd8c3d5

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