Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d22784f0bb87cea…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 10:27:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f5cccbee77c7ce81fe16cc99b86af7df SHA-1: 6f97a2fa2fb60d0d2e6e1a2cd4c076c2676bb0ad SHA-256: 3d22784f0bb87cea00598d4da12105622df373cecc28b9b49beba6dfdf651a1a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9632

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/406889139/legitimate-coin-master-free-spins-apk-game-hack PDF link annotation
    • http://dieter-sauter.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/more-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coin-master-links_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_off00004850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4850 25204 bytes
SHA-256: d756e77bbdd1b2cf4ca1ccd3954a488078af95d4ab221933759fc710dcbba84f
font_01_sfnt_off0000815d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 18604 bytes
SHA-256: 744d2d183457972f47b0db91107cea2f4bf33f1c8b8b46bcb558057de1b31a04
font_02_sfnt_off0000a43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA43F 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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