Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae03a99b040c31ac…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 05:15:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9b3d5e73f9a2b4408d5e77e1900fb187 SHA-1: dc0cee60c7254bb4e08ddc8ed8c4de6a71a26f75 SHA-256: ae03a99b040c31ac2758b107f3781a1434fb53f0d4bc55d08efc0af51aa7d49b
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 http://netcdn.tw/app/479516143/how-to-hack-minecraft-game-hack PDF link annotation
    • http://katalog.perpustakaanlia.net/repository/get-free-robux-on-roblox-using-no-downloads_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-online-games-no-download-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-roblox-code-giveaways_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/how-to-get-free-robux-and-bc-2021_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/how-to-get-free-robux-on-a-computer-2021_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/dragon-ball-final-stand-roblox-exp-cheat_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/roblox-groups-that-give-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/roblox-how-to-hack-into-builderman_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/bloxburg-roblox-how-to-get-multiple-floor-free_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-script-exploit-to-use-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/free-pokemon-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.perpustakaanlia.net/repository/hack-robux_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_off00003081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3081 21800 bytes
SHA-256: a5f7a1274a5a9b415b16205289b79c7523c0c89e0e425c7c87cd803d2e4565d5
font_01_sfnt_off0000602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 18332 bytes
SHA-256: 532c884a4d8ab194113d3323d4275cc83154e954f62235f4e0d0243afa765cb8

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