Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a1537452ec3bc1…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 19:11:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f3387be03b6eb02fd39604a5e9f65112 SHA-1: d8c36b5aa61dd61a939e0ec8b1fc1e0103e5cc4b SHA-256: 02a1537452ec3bc110408b52683651046f566a445ef4e1a97c68cf60457f324a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to external websites, specifically a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering 'free Robux' and game-related cheats. While no scripts were explicitly extracted, the PDF structure itself can embed malicious JavaScript, and the primary function appears to be redirecting users to potentially malicious or scam-related web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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.
  • 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-robux-generator-game-hack PDF link annotation
    • http://xenonsvjetla.com/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/earn-rbx_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004626.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4626 28204 bytes
SHA-256: 3a53077f20f37199406788a012128f55e252edd1b2c36a2ada15d41180737ed4
font_01_sfnt_off0000880b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880B 18344 bytes
SHA-256: 10e3e3d4c68cd560ea953d22ca565409121c707f4baa42eec19ee19970d6ace4

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