Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6acbddcb6796c3…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 07:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ca9f18fcce66c11d24b95effd5a6b337 SHA-1: 0240c1aff7e44356cb11551ffd0caba8bb3369a2 SHA-256: ca6acbddcb6796c3cd10c9c9b6a171798348f72b2e9f620f167bbc0795b8d3c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains embedded links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/coin-master-free-coins-link-facebook-game-hack. The document's structure and embedded URLs suggest it is part of a phishing campaign aiming to redirect users to potentially malicious sites for credential harvesting or further malware delivery.

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-coins-link-facebook-game-hack In PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-roblox-gift-card-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-roblox-account-getter-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/dragon-ball-rage-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/i-got-hacked-what-do-i-do-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/codes-for-roblox-free-website_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/roblox-pizza-place-hack_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/glitch-foe-free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-now-com_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/how-to-hack-an-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_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_off0000319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319B 22324 bytes
SHA-256: 9ff51143abc535692a480e70134d71e94238ee390b7b511c1d8a832f578ed246
font_01_sfnt_off0000636a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 18324 bytes
SHA-256: a658124a96d7796e28a28fa88504f15f0c1b8d02bb82398f146ea7e801da5874

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