Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d555fce67473650…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 04:06:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 01b18db9c0ec161b049d4d4cb56f2fa3 SHA-1: 57361d014aa620d62e0ce71ab8564a8ea710bde3 SHA-256: 9d555fce6747365027178255b07da30210ef2bb3b938ac5a11b0248553be3714
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generators" and "game hacks" for popular games. The document body and extracted URLs strongly suggest a phishing or scam attempt, likely aiming to lead users to malicious websites or download further malware. No scripts were extracted, but the presence of multiple malicious links is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/406889139/haktuts-coin-master-free-spins-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pubg-uc-hack-apk_GM1330123889.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacked-roblox-faces-id_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000529d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529D 26364 bytes
SHA-256: d13abd9ab4375fca4bbc628a5f693a364ff0987d60a5e1880e70c617568a38c7
font_01_sfnt_off00008f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F67 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off00009a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8B 18196 bytes
SHA-256: d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854

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