Malicious PDF — malware analysis report

Static analysis result for SHA-256 03fce22ca36f4be3…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 01:29:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 544c53ca39ff0b7f246dec9de8d38316 SHA-1: aa218ac6ee50f7c44cfc5b54e83ed6015beee6dd SHA-256: 03fce22ca36f4be380124643165f07dbe1cc8ee5a13ede3eb198dea674159091
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically 'Como Hackear Coin Master', and embeds a link to a known malicious redirector. This redirector likely leads to a malicious site designed to exploit users or deliver further malware. The ML classifier also strongly flagged this PDF as malicious.

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/como-hackear-coin-master-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/robloxcom-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-women-free-hair_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-robux-but-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-download-for-windows-8_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-gamepasses-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/working-free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-black-pants-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-roblox-coins_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-2021-may_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_off000030d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D6 22324 bytes
SHA-256: 7a58ce574c7fbcaa4881bcb102fc3052fac2cb8d1cd256aa7ab4702fea8f819b
font_01_sfnt_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 18264 bytes
SHA-256: 7b494730981af8d7f2101a902cec1c2dac51ef1d1cb55d4095fe22632eb9d633

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