Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe5299c5d9ddb8b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 13:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 393b2ed79e9572f14958301b6d7d3ed6 SHA-1: 01fda5d3d5a264703a7f8ec5b618c66ef9ee0136 SHA-256: fbe5299c5d9ddb8b832dd2bc63574a3c9c7d26fa680dfc59a42afd2aee16ab5c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into downloading or accessing game hacks and generators, redirecting to malicious infrastructure. The document body and heuristics indicate a phishing attempt leveraging popular game titles to entice clicks. No scripts were extracted, but the embedded URLs and link farm structure strongly suggest a malicious redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/protosmasher-roblox-free-download-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-btools-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/game-give-free-robux_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_off00002ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFA 22100 bytes
SHA-256: c292944dda42145449509c8636d712e0411661ac4efad7843e4760295985658b
font_01_sfnt_off000060c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 19840 bytes
SHA-256: a7e409da41ff17c724d7df7cc888d43ffa098d6a0567a23d04fda4f4cf7a9c84

Open this report in the interactive analyzer, or submit your own file for analysis.