Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ceab2e8204ba17…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 17:50:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 208ccae3babe3cb120e975e82801582d SHA-1: 798cec5453aebc01b0134e92be5dd43e3fa8190c SHA-256: 86ceab2e8204ba179a9c37008d019cbdc4bbd6b52f3fd1d0661bafda52a757fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-hack-apk-link-game-hack. The document body and heuristics indicate a lure for game hacks and cheats, suggesting the intent is to redirect users to potentially malicious sites for downloads or further exploitation. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/406889139/coin-master-hack-apk-link-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacks-for-dragon-ball-burst-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/redline-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/purchase-iteam-free-pastebin-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-tool-download-tutorial_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-using-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-roblox-net-one-hendynummer_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-times-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hacked-with-2-factor-authenaticatio_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/one-piece-nightfall-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-no-clip-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-tix-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-for-vids_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-100-robux-2021_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_off00003156.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3156 22672 bytes
SHA-256: af1cd84a657b8b8047fbb92d02847e3cbfbc87af6ccf1ac8c395be2833073d1e
font_01_sfnt_off000063c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

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