Malicious PDF — malware analysis report

Static analysis result for SHA-256 1402dd31b764b894…

MALICIOUS

PDF

42.4 KB Created: 2021-05-10 17:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 305e89395bba17ac01f24df2de93eaf6 SHA-1: 16c0c9ff9b9b0382f886097c7aec075b20d8bc41 SHA-256: 1402dd31b764b8947d25efeb36613a63bfaadf0a5b4ddad93bae512065cbe112
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 0.9971

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/coin-master-free-spins-link-today-new-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021_GM406889139.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_off000048c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C1 24672 bytes
SHA-256: 09768d67057c31a91e8469874614b13d27047bdccf364ba9211d7db1a742e467
font_01_sfnt_off000080f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 18976 bytes
SHA-256: 9ab4b87832590d82aec569b9c8693c2016d5d9151569e528de1ed13ad8a1cb2c

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