Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a6a5ce1aee34f4…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 02:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8e0d6763c1f702646f9807760175055a SHA-1: 6946e5dc9772775610e829923d62ba035095e87f SHA-256: 11a6a5ce1aee34f4b71ff24ac11d8df4b0c3934bf97d53b1e325e794b1f460f6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a document body that attempts to lure users with promises of free game hacks and followers, impersonating brands like Apple and TikTok. The primary malicious URL, http://netcdn.tw/app/835599320/tiktok-fans-free-game-hack, is likely used to distribute further malware or conduct credential phishing. No scripts were extracted from this sample, but the ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/835599320/tiktok-fans-free-game-hack.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/tiktok-fans-free-game-hack PDF link annotation
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/hack-roblox-account-kali-linux_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/como-hackear-roblox-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/2021-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/assassin-2-hack-roblox-script_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/hack-welcome-to-farm-town-beta-roblox_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-hacker-2021-download_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-booga-booga-on-ipad_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/como-conseguir-robux-gratis-en-roblox-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-jailbreak-fly-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-vip-for-hammer-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-space-outpost-tycoon-script-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-fre-fsp_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-with-lucky-patcher-no-root_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-limiteds_GM431946152.pdfIn PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/roblox-robux-hack-no-survey-no-human-verification_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_off000033dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DD 22404 bytes
SHA-256: 85a099f46a8a39b4d61df66904d64b4a9bc0953f9fb8a4c7b4cf510c7d00e5a0
font_01_sfnt_off000065ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 17972 bytes
SHA-256: 635089bb0a2dda3b90a25983121ccb3da5acc2e65406b6e599c0c265bf0918e0

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