Malicious PDF — malware analysis report

Static analysis result for SHA-256 1362a8041e9c245f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 03:03:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9523f55f3f7d85899e3580789ba7d68f SHA-1: ddbdb613b4b9cca9fc3c0d4c966eb02d2f9ecdb7 SHA-256: 1362a8041e9c245f966b1c75d8cd6c0e169788e30b195a59019681130e5a92cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that strongly suggest a lure for free game hacks and virtual currency, specifically targeting Roblox and Coin Master. The primary malicious URL, http://netcdn.tw/app/431946152/free-vip-roblox-game-hack, is flagged as a known malicious redirector. The document's content and the heuristic firings indicate an attempt to trick users into visiting this malicious site, likely as part of a phishing or scam campaign.

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/free-vip-roblox-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-anti-hacking-saving_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-how-to-changre-your-name-to-something-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-inspect-element-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-rixty-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-roblox-club_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-xbox-one-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/divine-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-no-waiting-or-inspect_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/csgo-roblox-hacked-client-download_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/spin-free-coin-master_GM406889139.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_off00003113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 22708 bytes
SHA-256: 107b0c15ad87dfa021c3b353263de22d3b3764013ba068d18a7fd7c51c954506
font_01_sfnt_off000063df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 19080 bytes
SHA-256: 5cd26e17e9044f55fd2016feb0b7717245efb1602296708d61af1d0891fbbad2

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