Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a816ab143d11b3…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 08:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ad44fe261e82e8413e1edd1a5b73fb29 SHA-1: b40eb9455b30458788734643055b5624db9afec5 SHA-256: 32a816ab143d11b32f9d53d36af9e56bd15b6799c46b292906dadc725bcb80b8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

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.co/app/431946152/script-how-to-get-free-robux-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-reedeem-codes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-generator-roblox-no-survey-pc-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/trucos-de-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/is-tiktok-free-app_GM835599320.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/rbxcity-free-robux_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_off00002fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB6 21860 bytes
SHA-256: dd6b52d58bd1d776807baa520cac86ed6092b58071d86eda2c2faa4b3e594929
font_01_sfnt_off00005fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD0 19280 bytes
SHA-256: a96034a7163775ec6fd7622287b52fb3ea7c93641787cb5436d1b826e46e21f0

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