Malicious PDF — malware analysis report

Static analysis result for SHA-256 a19c480c9369ecea…

MALICIOUS

PDF

50.4 KB Created: 2021-06-09 11:14:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 96ef5aabe470e0bbcd3bddb25ea0df01 SHA-1: 352e8d50f8ab308e648dfc909fedca8b1c6e8566 SHA-256: a19c480c9369ecea3cf51445d47474ff7ed387d0ae765c841bb49bb423388fe1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based 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 0.9769

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.tw/app/431946152/roblox-prison-life-hack-script-infinite-ammo-game-hack PDF link annotation
    • https://www.gymun.cz/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/robux-hack-pro-tv_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/hack-apps-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/free-code-for-huge-cat-pet-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BE 31952 bytes
SHA-256: 312df93b91a2ad2c9d524fa100d553aba01e20c8e268a1868fc1b5901ab9a1e5
font_01_sfnt_off000096a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A4 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off0000a03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03F 18996 bytes
SHA-256: 49d2331ee869623e314b4a5a370bdc01daed5bf3de70bcb90ccb208661bdb72d

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