Malicious PDF — malware analysis report

Static analysis result for SHA-256 341423d045f2e6d8…

MALICIOUS

PDF

48.6 KB Created: 2021-06-08 00:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: acc4d253fa068364f206365afb118ad0 SHA-1: 2b34b62ea52d1aeacd0b8fc5b735c57349160776 SHA-256: 341423d045f2e6d87a5a054a660bc34cc97c1e1a8957dddd17671cfc10e9d65f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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 https://netcdn.tw/app/431946152/dansploit-roblox-free-game-hack PDF link annotation
    • http://pia2000.net/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/code-robux-free_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/2021-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-coin-master-spins-2021-link_GM406889139.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
stream_004_off0000538e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538E 30824 bytes
SHA-256: 1c8e0a2311c0f1c28f553f3d17e0c88e7e89d3f6adc073fe69af2e017675b1a0
font_01_sfnt_off00009a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3C 18744 bytes
SHA-256: adf4300c903d5de7b678d1cb27bb9aba52ea0ceebbdb881113a9d6ef2bf30320

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