Malicious PDF — malware analysis report

Static analysis result for SHA-256 d816d689280f5ae4…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 19:05:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1205a6649fd2edd6f4be1e62d7669685 SHA-1: ad1289e4af558e24bb1ff7facd316e8aac2288d0 SHA-256: d816d689280f5ae4318aa33126eaea56e5d5b9fa4a84eaa61cd43143bd088f6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a clear intent to trick users into visiting these sites, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam campaign.

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/op-rewards-robux-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-wearable-hair-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-old-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-hunger-games-ozzypig-cheats_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-roblox-hair-codes_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_off00002ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE5 21984 bytes
SHA-256: e959769704bb81e77b127a9cb2e4eee97edd41174c844273626ca1b375a8d789
font_01_sfnt_off00005d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9A 19068 bytes
SHA-256: 534faaa36bf089c7ecbe950730c1199a35b13db4b273adfd3dba00952940d618

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