Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a88b0598d9c1003…

MALICIOUS

PDF

34.2 KB Created: 2021-06-21 00:08:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 14c06e7e7e6e55de615f8215a415fe48 SHA-1: beac6e85b4dc9725ba93f5cebe5f5fbfc17513e7 SHA-256: 6a88b0598d9c10039fd90295980ddf8a2fb39297ed275f208c7f98297684398a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free Robux generators' and 'game hacks'. The document body and heuristics indicate a lure to trick users into clicking these links, which likely leads to a scam or further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/crear-hack-de-robux-game-hack In PDF document text
    • https://pemadamapi.net/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/how-to-cheat-in-roblox-boxing-simulator_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-generator-no-ads-or-surveys_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/cch-ly-robux-free_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-no-human-verification-2021-pc_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pemadamapi.net/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/find-roblox-on-computer-hack-in-escape-from-the-demon_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://pemadamapi.net/images/free-toy-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://pemadamapi.net/images/free-robux-with-no-survey_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_off00002e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0B 22792 bytes
SHA-256: 03c06d72a8ef9d2b10c697703bcf28b7181bda245b5b1338148087274fd63d0c
font_01_sfnt_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 18888 bytes
SHA-256: de5f1e0489c1423894ec77a53dd998eac8fe36001afa34ad5d8416bae76981da