Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40253c821a7b651…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 08:57:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e199d7b4b2ea6acec0b0ef1a2b8e1b57 SHA-1: 12c7e781119611ba41631f3418bfe55c1fcaec6c SHA-256: f40253c821a7b6516c01b710b5151f2730568306b9d13cb7c532bb3cf82173a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'free Robux' or game hacks to entice users. It contains multiple embedded URLs, with the primary one being http://netcdn.co/app/431946152/how-to-get-free-robux-seniac-game-hack, which is likely a redirector to a malicious site or phishing page. The ML classifier strongly indicated maliciousness, supporting the interpretation of this document as a phishing or scam attempt.

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-get-free-robux-seniac-game-hack PDF link annotation
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/oof-hack-off-roblox-id_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/dungeon-master-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-cheat-jailbreak-fast-run_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/free-robux-hacks-fo-pc_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/infinity-jump-roblox-free_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-mm2-hack-2021_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-robux-hack-2021-working-version_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/cheapest-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/roblox-admin-panel-free-robux_GM431946152.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://mobile.connecttravel.com.tw/image/data/files/coin-master-game-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB4 22608 bytes
SHA-256: d22a032f149198f494163ab9aec586c0748d875b6767b97908724efe05e24b3a
font_01_sfnt_off000061c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 19104 bytes
SHA-256: bc27d2a3c259d783ec07950e3ebefe7b8d0bf12194ff2ef189dae1f5f6da1098

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