Malicious PDF — malware analysis report

Static analysis result for SHA-256 a219deefc09f90fe…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 10:46:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe32a87ba55992f32926848e74daa40b SHA-1: 482c06171e05f90bc9a71af45b55cbfd02c36398 SHA-256: a219deefc09f90fec236c6e118dbc7b443022ffe154b0a89db1c3d3c0dc51c4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for further malicious actions, such as downloading additional payloads.

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/www-roblox-com-robux-free-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-money-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-no-human-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-gamingwithkev20219-in-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-generator-addon_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/mad-city-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/robux-hack-apk_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-link_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_off00002dd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DD7 22252 bytes
SHA-256: 4add1e3bff70c4b381c47ec7e62a9f0307b691b7bff1983726375432b8c40e54
font_01_sfnt_off00005f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 19412 bytes
SHA-256: e3c8c7c2ff0f885c816f02c31cddbc793d7a6ff74f38847110c716c7ceebbac0

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