Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1880cbdb4fb3847…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 00:24:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 592ce4e1765be369b6ea4b6caa8a6d5c SHA-1: c8a13847098dbff87c6c2ff6f4e42bfb843d4cd3 SHA-256: f1880cbdb4fb38478cf112ae80aa06b148d38b1d36bf0dc9c5e056797644a6ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-hack-pro-gamers-game-hack. This lure is designed to trick users into believing they can obtain game hacks or generators. The presence of a visual download button further supports the deceptive nature of the document. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links.

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-hack-pro-gamers-game-hack In PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-roblox-vertual-items_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/v3rmillion-roblox-free-nuke_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-hack-anything-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-hack-march-18th_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_off00003283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3283 22452 bytes
SHA-256: 85af6f5fe49df485eb29381347d2e87062c11911da3d7c1d16585bac4e40d4e2
font_01_sfnt_off00006480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6480 18416 bytes
SHA-256: 42eb204123647df6f85ca188dd99f1d84b9bafa3d0fb5c7709fcc50fb0944608

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