Malicious PDF — malware analysis report

Static analysis result for SHA-256 3460b71291f568cd…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 02:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fb96ff87011b9dae59e5c20589df9cad SHA-1: e8417e257dddcc261a36793211443889fc5e3be0 SHA-256: 3460b71291f568cd7f7fae676dd8c077f77574766c7ec2b11d82ab44adc4f45a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as generators for free spins or game hacks. These links, such as 'http://netcdn.tw/app/406889139/50-000-free-spins-coin-master-game-hack', are flagged as malicious and likely lead to further malicious content or phishing pages. The document body and embedded URLs reinforce this lure-based attack pattern.

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/406889139/50-000-free-spins-coin-master-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-subscribe_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/different-skywars-codes-for-free-coins-on-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/someone-hacked-my-roblox-account-took-all-my-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-dominus-for-free_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-jailbreak-hack-download-easy_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-money-on-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-websites-2021_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_off000032a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A2 22768 bytes
SHA-256: a24f8c82675aba1e7f18d7adbc88a8a3385e0d9a53b8750cb9a8f8e3560b48c7
font_01_sfnt_off0000657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 18480 bytes
SHA-256: f050a5cb8527be99d3c3e84738d571a41e36df8bd1ad63ca537930e630161d23

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