Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e55b0cd2ef58c80…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 12:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1df0e002fd59905377608d87f2903604 SHA-1: 3b87450abd3d8ca2de4476b5949126eb05444cb9 SHA-256: 7e55b0cd2ef58c8084702dcf3d6c81a700b7b2471435f23a64d194d22bd9e99f
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/431946152/robux-for-surveys-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/how-to-hack-a-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-vip-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-we-are-devs_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/proto-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-150_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pokemon-go-no-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-heaven-daily-free-spins-link-today_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
font_00_sfnt_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 22360 bytes
SHA-256: 09a3736103ff1475115e5df06ac11bb7a33888d31bc9b1d57de2d5eb28438ac0
font_01_sfnt_off00006126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 19012 bytes
SHA-256: ec184981cee40d5be8dde6e660a66024581cf2de0c7acf7d26948343a0b944f2

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