Malicious PDF — malware analysis report

Static analysis result for SHA-256 e906250188460ea0…

MALICIOUS

PDF

45.0 KB Created: 2021-05-20 00:39:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 04a7afdaa6a410996a5fc4aea36a0ce4 SHA-1: 4b44e01e1960d60f095960b25535370c8f967351 SHA-256: e906250188460ea04874018fbd2ca5b4d6f813d981918e2fd8543d099c5511c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The presence of multiple links to known malicious redirectors and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/835599320/free-fire-tik-tok-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004782.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4782 27536 bytes
SHA-256: 481fe47cb9492afc263e26e19259cef69e0f1a3a92a94f3f0c49c9850a6afce4
font_01_sfnt_off000085ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000900f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900F 17352 bytes
SHA-256: 62e7d40264bba51d27ba8d54c46ddf6f0beff4dcecbce6b3219df79ba9f92fb7

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