Malicious PDF — malware analysis report

Static analysis result for SHA-256 5988904e4a88f275…

MALICIOUS

PDF

36.4 KB Created: 2021-07-06 23:51:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab6c70023c7d39fd2dec63c181f106e8 SHA-1: 21edac66a8ea0fdfc068ddfd1b3361f653b8c417 SHA-256: 5988904e4a88f275d026a874c1737657f6983d5d033f9ef1c185abde87870e9a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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/431946152/how-to-get-free-robux-without-downloading-apps-2021-game-hack In PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-medieval-warfare-reforged-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/robuxian-tutorials-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/hoq-to-buy-anything-from-catalog-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/20210-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B1 22632 bytes
SHA-256: de216cd670ec948dfc27faa38f0ad8c1df62384846ef0ca99182677300d7be8b
font_01_sfnt_off00006512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6512 20464 bytes
SHA-256: bbee3cd2d045934f3587faaae269c5438879465e49c598d076b35cc198d7b491

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