Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4a9d972cfe2581…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 13:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d966ba54c46f8549f11892a9f04781c4 SHA-1: 76dfdea8902e1ab17e5bbe2af04259f715daa13d SHA-256: 6d4a9d972cfe2581ab4b47f1d75d9e5368e66025a0d169ce14ef8e225ecbb3b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple embedded URLs that are designed to lure users into clicking on links related to game hacks and free in-game currency. The heuristic firings indicate that the PDF links to a 'free generator / game hack' redirector, and the ML classifier strongly flagged it as malicious. The document body, though partially corrupted, also contains similar lure text and URLs.

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/406889139/coin-master-hack-ios-apk-game-hack PDF link annotation
    • http://pspmrsmbpj.com/opac/repository/roblox-hack-guis_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-to-make-time-freeze-in-roblox-free-admin-hangouts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/hack-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/groups-that-give-you-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-dragon-ball-advanced-battle-points-hack_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/kazok-how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-cheat-engine-681-scripts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-yummers_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-roblox-codes-2021-may_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/extaf-live-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/daily-free-spin-and-coin_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
stream_002_off00002efd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EFD 23828 bytes
SHA-256: daf67c88b8dddbf6bf534fbe780f52a3cadd601bc4efe589d241647fc435c409
font_01_sfnt_off00006429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 18180 bytes
SHA-256: 4c5127a69f018205538da135c479e78cbc581b43c71a88b63707f7d03620f798

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