Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff53421c2a0c978a…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 13:52:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 221957a9846ccbe4b82e4eb73df89707 SHA-1: 1b39ea8b73f6e4abf48c07ca0a6390788a47c459 SHA-256: ff53421c2a0c978a3af51e95ba9fdffc745fa24b88a97cde237ae128e0dbbc66
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 0.9864

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.online/app/431946152/roblox-hacking-website-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/tiktok-free-up-space_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/tiktok-free-auto-liker_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-twitter_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_004_off000053de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53DE 25728 bytes
SHA-256: 1e2fbed716c9fc0e8008b90de2006d01d186cd2e55b387249a241cd27762608e
font_01_sfnt_off00008eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEF 18892 bytes
SHA-256: e7d47ce6402ad6c34a9dd837b4455ddf5104770abd157e72eb2d384f2e13ef46

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