Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa815d9f106b698…

MALICIOUS

PDF

45.4 KB Created: 2021-06-09 12:51:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c68410aae759ccf41c163bafe07421a2 SHA-1: cbbe17154622af8d78e17b5b7ddfced4b09bd890 SHA-256: faa815d9f106b698283df664335ad38e104d8ad32d04e80e75c57b1d8540a074
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency'. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-faces-on-roblox-2021-game-hack. The document body and embedded URLs suggest a social engineering lure to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/free-faces-on-roblox-2021-game-hack In PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-pokemon-brick-bronze-shiny-hack_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/i-dont-feel-so-good-sim-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-hack-roblox-no-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-tons-of-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/hack-coin-master-mod-apk_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
stream_004_off00005004.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5004 27892 bytes
SHA-256: a9c6aaacc055feb95fee0a346e7f188843cc8bb10ce0f090a14448f372521855
font_01_sfnt_off00008dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFE 18576 bytes
SHA-256: b84e3a35b8322aa4342a639633dcb65e5c406b73d99167e95879a534dd0c7cd4

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