Malicious PDF — malware analysis report

Static analysis result for SHA-256 e77ea4f57b33e1a7…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 04:49:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4963f03634e58b4c201a8bd6fff9dcb7 SHA-1: 1fa4ca21ba47853a50da847110d4711867f99e8b SHA-256: e77ea4f57b33e1a7e3d6092e1b47a3f6d4501f7cbde91e293eaf114633093afc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector URL that promises free game hacks, indicating a lure for a phishing or scam operation. The presence of a 'download button' heuristic further supports this, suggesting a deceptive call to action. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/robux-800-free-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pubg-uc-generator-2021_GM1330123889.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacked-robux-oh-shit-meme_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/tiktok-free-videos_GM835599320.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/jailbreak-cheats-roblox-money_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/click-the-button-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheat-cashed-v3-download-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-tiktok-likes_GM835599320.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_off00005654.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5654 27912 bytes
SHA-256: de376661e4ea7b5c79231ad9f625d290279c41bafa08c4645a6df27c1515054a
font_01_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 18396 bytes
SHA-256: 37047f47249cb07df4ef9153038710181cef6d5d904632e620690ac1d8cbba84

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