Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96cbab31d006589…

MALICIOUS

PDF

48.4 KB Created: 2021-06-09 02:21:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5e76efb670b56d0347ab796012e5b047 SHA-1: 4f6c5314622cdffbd1183a78aafd04b940838c34 SHA-256: f96cbab31d0065892991a11ce00747aabf21d18d1c372da86f0c16b51a67524e
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 0.9796

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 https://netcdn.tw/app/431946152/where-to-find-free-items-on-roblox-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-app_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5084 25472 bytes
SHA-256: 4969a2eb8ccd2474dd532bfd5c8f8a683940bbc0700435a43bbabcaa855cb667
font_01_sfnt_off00008bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC4 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000986c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986C 18968 bytes
SHA-256: 56f2a33f15652959b0571651674f11119cb32cbd5946bdb755d4512bc14a260f

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