Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e5a18d41f2fa4d…

MALICIOUS

PDF

34.1 KB Created: 2021-07-10 01:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 62af16bcaa6686b3616178d22b1f3415 SHA-1: 14ac84a139c1417cab8db3a8fc8d02f16b900aed SHA-256: 46e5a18d41f2fa4db1fc33264bfec4988ee319d4f43748252d8c550f7a2f0ecf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

  • 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.
  • 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/406889139/coin-master-free-coins-link-game-hack PDF link annotation
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-roblox-promo-codes-july-2021_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/roblox-escape-room-cheat_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-roblox-toy-code-generator_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/roblox-character-customizer-free_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/roblox-dungeon-quest-hack-trainer_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/if-everything-in-roblox-was-free_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
stream_002_off00003009.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3009 22708 bytes
SHA-256: 3de57fdac2281b8ca14fa0d4057b7e27b57d38471280b5ded5d27a68d3b58bbc
font_01_sfnt_off000062e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E7 18168 bytes
SHA-256: 7e3864b359ae4e20f98f554aea3d5366a72fce57ca0fb6405be6acd76bdcbaac

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