Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c98e15385e88311…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 07:59:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 63298456e68ce4dbef24c5a104b0e4b2 SHA-1: ddfd6bb6e3e89f8604c36303943d30e91c494406 SHA-256: 7c98e15385e8831117c908f3aee54cad511173171650340d35bd2c04fe9b8e58
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/how-do-u-get-free-robux-2021-game-hack PDF link annotation
    • https://admin.9credit.vn/data/files/how-to-get-free-robux-on-safari_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/hack-indir-roblox_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/tix-hack-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/robux-hack-no-download-or-survey_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-robux-today-com_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-robux-codes-2021-list_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-do-you-hack-on-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/roblox-hack-bee-swarm-simulator-2021-download_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-22-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-items-in-roblox-using-toy-codes-works_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/jailbreak-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-robux-com_GM431946152.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_off0000311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311C 21816 bytes
SHA-256: 7cafb3792966899d0be1e5d341b121110feda88911555dada93188b107d60ca5
font_01_sfnt_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 19556 bytes
SHA-256: ee909949778bcc1eaeaae663f07e5a0770d7aed4eef67476ef7171e54895eba2

Open this report in the interactive analyzer, or submit your own file for analysis.