PDF static analysis report

Static analysis result for SHA-256 f5447c78f686d194…

SUSPICIOUS

PDF

34.3 KB Created: 2021-07-04 09:53:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 47f991db3086500a9abf8dab1d3be1de SHA-1: 0abe26df24ecefd0bc5bf826546a22a73a0927c0 SHA-256: f5447c78f686d194ac01a3657e3f8b3160d4d3e52b44bd583c51df1324a1dcff
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text promoting 'free Robux' and game hacks, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. The presence of external URIs indicates an attempt to redirect the user to a malicious site, likely for downloading a payload or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/431946152/get-free-robux-info-game-hack PDF link annotation
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/robux-link_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/roblox-swordpack-t-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/roblox-robux-hack-download-apk_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/mining-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/free-robux-cheats-2021_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/roblox-booga-booga-cheat-codes_GM431946152.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • https://healthcare.kyst.com.tw/image/data/files/roblox-fly-hack_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_off00003064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3064 22196 bytes
SHA-256: dcabfc34a37cd11389b5935c41dde59de1baf1e9c7114ccfe299210f5c339df5
font_01_sfnt_off000061ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AB 18820 bytes
SHA-256: 8535eaa3a36812cf4d83c53ed5505d1914af83630ad42aec0f482fa3bbee313b

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