Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d58efc162245734…

MALICIOUS

PDF

36.1 KB Created: 2021-07-05 16:47:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d8e914454dce8af2fc4842a81285cb21 SHA-1: 8047f7afa5333912d27a9083f68689e4843cbe1d SHA-256: 1d58efc16224573495675f8011673aab27aa52c15f5d7b8376c4da051fe9f966
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for malicious JavaScript execution or redirection to a malicious site, likely delivered as a spearphishing attachment.

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-free-spins-that-really-game-hack In PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-glitch-on-ipad_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-how-to-hack-in-your-game-hack-gui_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/invincibility-hack-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-vip-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-in-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/is-tiktok-free-to-use_GM835599320.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/which-pubg-uc-is-best_GM1330123889.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-5x-coins-anime-cross-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-free-expoit-that-run-loadstring_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/www-coin-master-hack_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
font_00_sfnt_off000034fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34FD 23356 bytes
SHA-256: 7f1e4275164cd52465192266baecc473aadb315c736b77e6707f09d58077de24
font_01_sfnt_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 18592 bytes
SHA-256: 6ce224978adda1273fbe859cfaaf113315cbbc733c62935cb77f5f7075e1d2c6

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