Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01ce3a8b6574bc0…

MALICIOUS

PDF

47.9 KB Created: 2021-05-10 23:06:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 80389c7928988c68bfb0b8f4dbeda6b3 SHA-1: 3984f5e63bbd0a727a2489cdb171a20da42f2c08 SHA-256: d01ce3a8b6574bc06ea6e71d207b90292520d6933f51927cf4cb3298084354d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure related to free game currency and hacks to trick users into clicking malicious links. The document contains multiple embedded URLs that redirect to potentially harmful content, including a primary redirector URL. The presence of these links and the nature of the lure strongly suggest a phishing or scamming attempt designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/406889139/200-free-spins-coin-master-game-hack In PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-game_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-free-robux-no-verification_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_003_off00004be4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE4 26984 bytes
SHA-256: 4ef0655fb800942b348f76af12f91d5a7deeaa2817d64cdd792f7cbd19298d9e
font_01_sfnt_off00008a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A13 4644 bytes
SHA-256: 77d9164d4caae86d352fe61efd17ddbe6180dcadf1ff2339c6bc2db275e2f158
font_02_sfnt_off00009922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9922 18180 bytes
SHA-256: 322b0d5b629f6df55fd3c77851cbfe7ee71104dfe1b9214827344950ced1d0df

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