Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0aed6100e87b3d2…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 18:19:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 4946c41fd8e3e6bad50aaa2e48cdf5cf SHA-1: 2b21467f81eb90a6287e0c5bb78357b57afccae5 SHA-256: e0aed6100e87b3d2d3388373cea19f2375292c45b76adf2d8a824efc10cc1017
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free in-game currency. The heuristic firings indicate that these links are associated with known malicious redirectors and lures for game-related scams. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggests an attempt to direct users to potentially malicious websites for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-instagram-game-hack In PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/roblox-troll-outfits-free_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
stream_002_off00002f8c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F8C 23076 bytes
SHA-256: 75d7e68a5d21a1a8726a6c2c3c4d5fb67f13d6dd86b95c494b5cb870eeaf078d
font_01_sfnt_off00006397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 18432 bytes
SHA-256: 329ab5e417910f7157b760b955a2397fcdadde05d5f1e3c7d5ef2b588797bdfd

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