Malicious PDF — malware analysis report

Static analysis result for SHA-256 80de4f693bac55bb…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 11:14:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0a68bd889ef9767d27608ac6a16c6054 SHA-1: 27131f77a17648259505b224c0007672d70f4ebb SHA-256: 80de4f693bac55bbcd35196e9ffeee023f7dc5ee0f1f2608e42af1585f3e3a59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free currency' for popular games like Roblox and Coin Master. The primary lure appears to be http://netcdn.tw/app/431946152/roblox-hack-me-robux-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

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/431946152/roblox-hack-me-robux-game-hack In PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/hack-game-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-roblox-july-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/easy-ways-to-get-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_off000030ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AE 22300 bytes
SHA-256: 51adb8537c8fe80f5b1d48ee394814aa4a1fce5a55292dc131da0a19bb6ea869
font_01_sfnt_off000062bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BF 18992 bytes
SHA-256: 86b86f91b54ee921683d76bd91845474e74a2f02ddd9d950759e972449d3ecfc

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