Malicious PDF — malware analysis report

Static analysis result for SHA-256 d85fca3d2dd40dff…

MALICIOUS

PDF

45.5 KB Created: 2021-05-10 16:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 48cc735d66792959209f2b795a47f5d4 SHA-1: dfffdb4f6cc80496e3e00d4776ac8e9e346b9521 SHA-256: d85fca3d2dd40dff0063f6e40fe11deca6c7054e2caf2d0de65f312aff3ef880
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF contains multiple links to external sites, including one identified as a game hack redirector. No scripts were extracted, but the presence of embedded URLs and the lure suggest an attempt to lead the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/roblox-no-download-hack-game-hack PDF link annotation
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2mdn.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.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_off000049d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D8 24212 bytes
SHA-256: 54220f1edfabd590873831da24642563f51bf5a0ca5033e58e303dc4fd9cd554
font_01_sfnt_off00008135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDC 18688 bytes
SHA-256: d5d7cfea6fb7c102685ba8f1dd19dd1f71835ac40da00045e859a47e2011ef1d

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