Malicious PDF — malware analysis report

Static analysis result for SHA-256 979f87ce266e4390…

MALICIOUS

PDF

36.0 KB Created: 2021-06-30 03:53:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 681e4f151295727a01e782794c5385d0 SHA-1: 959f645380cea63b0b423b58627a9f769a0342d0 SHA-256: 979f87ce266e439009329e3f2b8efd0402d5fad5bdb2aa588abed53380ff53d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document employs a lure of game hacks and free in-game currency to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-put-hack-script-to-roblox-parkour-game-hack, and numerous others hosted on perpus.unbi.ac.id, likely lead to malicious websites or downloaders. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains links designed to exploit user interest in popular games.

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 http://netcdn.co/app/431946152/how-to-put-hack-script-to-roblox-parkour-game-hack PDF link annotation
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/roblox-hack-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/my-avatar-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/comment-hacker-quelquun-dans-roblox-qui-a-bocou-de-rebux_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/roblox-pokemon-go-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/roblox-free-in-the-computer_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-roblox-accounts-2021-july_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/free-robux-instant-inspect-element_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana//repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/1-robux-every-second-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana//repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unbi.ac.id/slims7_cendana/repository/roblox-hack-de-romper-las-paredes_GM431946152.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
font_00_sfnt_off00003359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3359 22780 bytes
SHA-256: d5e1052a4de6e0e2967ed93681ce0d2fa97e0f877d2a7d4b435c7642347aa846
font_01_sfnt_off0000662d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662D 19516 bytes
SHA-256: 70af796a6788a0e29e63a581bca81e3ea12db8374152c1cc6052e6fb72116e40

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