Malicious PDF — malware analysis report

Static analysis result for SHA-256 31fae6a60036dd81…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 17:56:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f0e6eb3836fe842d4091892cdb90c2f SHA-1: 0711c1411a040ab7df23ec964ba39f2f31285da7 SHA-256: 31fae6a60036dd81bccc967d57bd01dc9a09c524da33eca8a5a34e733bf98fb8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body and embedded URLs suggest a lure for obtaining free in-game currency or hacks for popular games. The primary malicious action is redirecting the user to a potentially harmful site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/brand-new-free-robux-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/can-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-money-cheats-that-work_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-free-robux-hack_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_004_off00005026.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5026 25512 bytes
SHA-256: 52842446416ad6845200c00792b6d0299084693c1cfa5df7c4f28f1af15c3cff
font_01_sfnt_off00008aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AED 18580 bytes
SHA-256: ba034423a9bcdeadfd8a3c8922dc0468519144d4eb25c298a808cddca9dcf670

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