Malicious PDF — malware analysis report

Static analysis result for SHA-256 199b6e14b4ee76e9…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 11:08:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ca95db5022147cfa33425294d761dee7 SHA-1: e3fe9a0a2e2356b21693a2dd6d8127bcdb2e9041 SHA-256: 199b6e14b4ee76e958873c62fc9b9bdf54a7352cf4d9bb0e57c05b9a5acef9e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-link-twitter-game-hack. The document body and embedded URLs suggest a phishing or scam campaign aimed at users interested in popular online games.

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-free-spin-link-twitter-game-hack In PDF document text
    • https://www.banhngoncaocap.com/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/i-robux_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://www.banhngoncaocap.com/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 25460 bytes
SHA-256: c45ccfe42de6f227b51b50a41d67d68cea4c0fab1b18f9b920f0bba5850b9f40
font_01_sfnt_off00008444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8444 18220 bytes
SHA-256: b594fc670d790d0d446ae286633f4f60e484476280493cebd05396ea33631896

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