Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ba315e9cb8c0f8…

MALICIOUS

PDF

47.0 KB Created: 2021-05-14 01:07:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: abf0299e6f19328a696eb71a87c91f80 SHA-1: 767ee5c20ff38f04e5f38195a5ef2398776dcb19 SHA-256: 15ba315e9cb8c0f80cb8f880f60f5f0b67229ba8cb88ab3d53460dd522111c91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites promising free in-game currency and hacks, a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/roblox-robux-generator-http-freerobuxgenerator-xyz-game-hack PDF link annotation
    • http://www.myresidence.lu/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robux-page_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A51 25340 bytes
SHA-256: 41de565d6446309d5fbb8cf130a35bf7d3937d2b957c6ed1e60bc0dbeafc1c60
font_01_sfnt_off00008299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 4660 bytes
SHA-256: b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816
font_02_sfnt_off000092aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AA 19148 bytes
SHA-256: ca12ce3d7dfc1e8f594ff16b8d50f9174b7c57a2d485e52127105fd2973060c9

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