Malicious PDF — malware analysis report

Static analysis result for SHA-256 009d5aff40bffbf7…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 01:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9f5100ec6fd1beb156676c94c279dd68 SHA-1: 6526ace6fca67e0b2197dfa4528cada9f8b4f91b SHA-256: 009d5aff40bffbf799e98049edb8b8e7e3b5f368ea09048a92d05ca820030b5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lure users with promises of free game hacks and currency. The primary link, http://netcdn.tw/app/479516143/mcpe-client-game-hack, is identified as a redirector to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering tactic to drive users to external, likely malicious, websites.

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/479516143/mcpe-client-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/free-robux-hack-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/uirbx-club-hack-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-google-roblox-items_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-ghost-simulator-lua-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-clothes-and-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/cheats-on-skyscraper-tyocoon-2-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-hack-roblox-accounts-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/pubg-uc-660_GM1330123889.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-free-money-in-bloxburg_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-hack-any-roblox-account-including-admins_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-robux-2021-inspect-element_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/como-hackear-uma-conta-no-roblox_GM431946152.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_off00002fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDA 21884 bytes
SHA-256: bced8307b71d73c9fac930a7c6afc4ab568addb60904e19b64c2b0c7cc1b513d
font_01_sfnt_off00006016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 18108 bytes
SHA-256: c8b0b382a945d42a24ee610046caad250b3fa0bd75413a760b577ee3708e89f2

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