Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7319c06f46524e7…

MALICIOUS

PDF

37.3 KB Created: 2021-05-24 00:21:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5ed22c9652a0229efdd99f27cc4b5033 SHA-1: 24fa48c04e56a3461032a54297aeaf7a08f3e17e SHA-256: d7319c06f46524e728676c237f1dc7b54f595206ad3ec5a58896a2292db523f1
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/how-to-get-minecraft-java-for-free-game-hack.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/479516143/how-to-get-minecraft-java-for-free-game-hack PDF link annotation
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000036e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36E5 25796 bytes
SHA-256: f854f4af132f5625db942b91d1bbf05883aecce1462026708135a1234f2b84dd
font_01_sfnt_off0000711e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711E 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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