Malicious PDF — malware analysis report

Static analysis result for SHA-256 e815a9d73edf52b5…

MALICIOUS

PDF

48.3 KB Created: 2021-05-12 12:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c47304308b105b62f52f7f9a49b46bdb SHA-1: abcd80a72ac11220152ac901ac3e44a0d5d806e6 SHA-256: e815a9d73edf52b54ce44afe71dd3a81f3bcddec63626a7ee8b6bc932bf15960
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it's a lure for game hacks and redirects to external URLs. The document body, though partially garbled, references 'How To Get Minecraft For Free 2021' and includes the malicious URL, reinforcing the lure. The primary intent appears to be directing the user to a site that likely hosts a secondary payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/479516143/how-to-get-minecraft-for-free-2021-game-hack PDF link annotation
    • http://j-cook.pro/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/robux-game_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E09 29244 bytes
SHA-256: 54cb66f10e0dcb763f1b3395f7bb2920ab3935bdb9fcf07069403f8aa6b626b6
font_01_sfnt_off00008fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00009a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4C 18276 bytes
SHA-256: f72584a9d01c2da042f33208491f9b72ec8022d2d16609869bbd7195f9399835

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