Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a2359d9058aab3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 19:43:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: fa0841cf17b126c7163ad019692244aa SHA-1: 0e43718f28801259faca791e57bfc2e156b14365 SHA-256: 06a2359d9058aab340ef9ac5d41aa98e8d6de4219afbc9e59ac3a92809ffafa0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting a "coin master hack". The document body and heuristics indicate a lure for game-related cheats, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-apk-july-2021-game-hack In PDF document text
    • http://e-library.akademitelkom.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.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_003_off000048f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F7 25848 bytes
SHA-256: cf06ffa74cc32e0fc69ebbfd9d08fde574dd246ea6f87ff9547bf73b34b60fd1
font_01_sfnt_off0000836c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836C 18856 bytes
SHA-256: e99766a1a0b67468f3491ceb7ac95e225ca21799f54ecffa1d342ccadf1fb563

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