Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9138c3d6a88855…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 08:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 13d21c25b5c720ebc1a01a33e2e09593 SHA-1: ad3bf8f70d69847429824aa62e62ef61e1db9d86 SHA-256: ab9138c3d6a88855e06f19cb740feb15b9e612f35e71d9dd1532d70d9001a652
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/835599320/free-followers-on-tiktok-game-hack PDF link annotation
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/roblox-contrasea-hack_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/robux-offers_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-robux-just-join-group_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack-online_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/where-to-get-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/tiktok-free-no-sign-in_GM835599320.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/www-roblox-com-catalog-free_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/roblox-anti-cheats_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3446 22772 bytes
SHA-256: 9b719ae9560325201ad36d7d54878c9d7c1eb8c56150a8c7bbbd3052ece7f733
font_01_sfnt_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 18208 bytes
SHA-256: 900242d07ae6cab3e433aa8487f91ab2231c36085b8f0385cc652e07bc701d11

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