Malicious PDF — malware analysis report

Static analysis result for SHA-256 7699a96f99cede19…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 09:38:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 10cbf28a3589afc546ee65de52352479 SHA-1: ccad75d76b4e0eddcdc00844b4b6ddf11d248bd3 SHA-256: 7699a96f99cede191942220a13195cb6f274a3615c335ccdd4b1361531d25b42
162 Risk Score

Malware Insights

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

The PDF document uses a lure of 'free generator / game hack' and impersonates Microsoft services to trick users into clicking malicious links. The primary link directs to a URL that promises 'free roebucks' and is associated with credential phishing. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/431946152/free-roebucks-com-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/431946152/free-roebucks-com-game-hack PDF link annotation
    • http://nationshield.ae/userfiles/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/robux-website_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/my-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/get-robux-now_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.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_003_off00004891.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4891 29160 bytes
SHA-256: 01d026178f52199f4310b53d98b60db0975286fcb27af125581a0cc01e6ecc99
font_01_sfnt_off00008a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A24 18236 bytes
SHA-256: acbd5711f3c405a9970fcfdb5585b9ec9d025850f2b671bb57125d23f3c9a6d7

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