Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74e72017862043f…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 03:39:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a86d3bb72605386dba1868539fff2c6 SHA-1: 6caf2f6873678f9acc5cff65aeb0e4e8f097a66a SHA-256: d74e72017862043f6ae20afd7949b5d57504fc4ad863523e165d5f4642be47d9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack redirector, specifically mentioning 'roblox-knife-hack-game-hack'. The document body, though heavily obfuscated, contains a similar URL. This suggests a social engineering lure to trick users into visiting a malicious site, likely for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/roblox-knife-hack-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-texting-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-de-roblox-robux-para-pc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/anyway-to-get-robux-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://krnl.rocksIn 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_004_off00004f5d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F5D 26880 bytes
SHA-256: 31ccc0f41ae1d725a640de735a5c77d86051f2ab2f3b91d492782176fb372634
font_01_sfnt_off00008cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAB 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9659 18300 bytes
SHA-256: f16427f481bdfe7cf4aa0ecdb23e0f17dc29246dc3d8d7cfe84f879a1d845018

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