Malicious PDF — malware analysis report

Static analysis result for SHA-256 28a38c0e048265fd…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 21:58:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 69eb427a20d8b9c50d80748341e8bfb2 SHA-1: deeceb07f47c015f2946bf4a6d4b40b6a88fb434 SHA-256: 28a38c0e048265fd80bae13ad5130eb9712f90215c5559e365d61c0db3c0439e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users into clicking on "game hack" or "free robux" related content. The primary malicious link, http://netcdn.tw/app/835599320/can-tiktok-free-view-bot-game-hack, is associated with known malicious infrastructure. The document body and embedded URLs suggest a phishing or scam attempt disguised as a generator or hack.

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/835599320/can-tiktok-free-view-bot-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-1k-robux-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/redeem-code-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-good-hacks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/real-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/dbor-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-to-get-admin-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/pin-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-im-gay-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-how-to-make-a-cool-avatar-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-hack-scripts_GM431946152.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
font_00_sfnt_off00003289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3289 22048 bytes
SHA-256: 0fe238ce1607812a3f7a301f5accee1a22f44570736de9c9bb7e943f4c88e69a
font_01_sfnt_off0000633a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 18488 bytes
SHA-256: 761de96bd22d3b99e944e5da3b2226b4a298825039979d84c2a09f5920c93470

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