Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d47d8bf57e57d6e…

MALICIOUS

PDF

42.4 KB Created: 2021-06-13 21:57:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: da4ad2173f020e71c1c239fdc091551d SHA-1: de233dff89d14309d6f9e7edb3045af4d806586c SHA-256: 2d47d8bf57e57d6e1d5e8950ba90e518807b18d506e93fdbfc838b646f9d5ba6
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 0.9971

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.co/app/431946152/play-roblox-on-ps4-free-game-hack PDF link annotation
    • https://tnupacktour.com.tw/image/data/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/haw-to-get-free-dominus-on-roblox-a-week-ago_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-assassin-knives-roblox_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_off00004bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC0 23968 bytes
SHA-256: 091a46c1e4286ace6c199c1f1582d7e2214c3bcc74edd778b83857bf171149a0
font_01_sfnt_off0000824d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824D 18572 bytes
SHA-256: a33ab8f1f2d114ce70909cd4eaaaa089b47f851872e3e65d9c006ece8ff76da0

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