Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dfdcd11822da1fd…

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 21:11:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2d62733c8ad3b79c854372424ac690fb SHA-1: a6e21dd1bae6d7b022791010e6b8c3ba61624df7 SHA-256: 5dfdcd11822da1fd4c9fc0053e2ced9aa873f6b42183e2c4d5707487380fa344
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 0.9980

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-booga-booga-hack-game-hack PDF link annotation
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/mc-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-windows-10_GM479516143.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_off00004d37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D37 27952 bytes
SHA-256: 2a944d9c763c883c463bc13b46457bf1a39332a609c8359bb49dff7049264280
font_01_sfnt_off00008d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D46 18468 bytes
SHA-256: 8f2f52aff80fb49a328e063288f2b5e4f116517157d382fa8b39f5595cbe047c

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