Malicious PDF — malware analysis report

Static analysis result for SHA-256 58cd0b2106546b44…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 09:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7e17e07bc565c0c72e27ef5a529a7dd6 SHA-1: d0fa085af9a4e68711ffdb416c9dd89e3e1d343c SHA-256: 58cd0b2106546b44bff85eb8b406dded10459a13dca55d58d02d600e32993462
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 0.9980

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 http://netcdn.tw/app/406889139/how-to-get-spins-on-coin-master-hack-game-hack PDF link annotation
    • https://cogp.greentrade.org.tw/image/data/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-get-2021-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-sell-stuff-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-get-free-robux-real-true_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-hack-robux-download-2021_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-hack-roblox-work-at-a-pizza-place_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-spins-coin-master-hack-2021_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_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 22336 bytes
SHA-256: 2cc1f45cbbc3f34ed6985097bb05aaaf0d5e25e8fb549c3881281e3e05b3bd0e
font_01_sfnt_off000062c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C2 18344 bytes
SHA-256: 4391b8fdd94c3e91ab7c8b66dd483ba7ee2647ef2a9573d78ffb2d7635701131

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