Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ba22c05d2f8e7a…

MALICIOUS

PDF

31.6 KB Created: 2021-05-15 04:37:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 002d8e948af75c6c66744cac0f49109c SHA-1: f6d752bd69ced4468a60943c710f7ac0cc86eec8 SHA-256: 26ba22c05d2f8e7a13bc4b83613e6ff573e541c232f8abf2db114f33a846895b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and 'game hacks', directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9826

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/free-robux-apps-that-work-game-hack PDF link annotation
    • https://allhimalayantreks.com/userfiles/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-game_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/body-roblox_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/can-lucky-patcher-hack-coin-master_GM406889139.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_off000024fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24FE 22820 bytes
SHA-256: 9f25760c9b7c7816a8a4e7f0c519592e8001cc2e26dd92dc8804c8194562e9d2
font_01_sfnt_off0000583b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x583B 18480 bytes
SHA-256: 693b771942b699c25de7a037200c04f0351ee4cf6c5aaffd197a459f64f7b68e

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