Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee8dcb4aaa4becb…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 20:36:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d35e79b9f72a639be52481ba5f61a984 SHA-1: 99d67ee4f6da18e5ffdf5b00f71c7947ce47ff12 SHA-256: 0ee8dcb4aaa4becb69641dc408359ebaa656b6e2e4d1ba1344bf9e77e9c99099
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/how-to-get-more-robux-for-free-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/tiktok-free-10k-followers_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-a-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-cheats-online_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-glitch-5milion-robux-october-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-para-poder-hackear-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-in-a-ad_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-on-dragon-ball-z-rage-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-do-i-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/android-fast-robux-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-org_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_off000030be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE 22292 bytes
SHA-256: 7af150d45dec3022544291a206c7e41e30b0b323feb9f5eec3c3f60601a876ae
font_01_sfnt_off0000622d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622D 19180 bytes
SHA-256: 2bff2d2121057f006b71b066e94fd010776662c2bbd91426c2b13817cbe3f110

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