Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca7ff9181854aae…

MALICIOUS

PDF

45.7 KB Created: 2021-06-04 01:00:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aed20a754fa9b25ceef76656471631f7 SHA-1: ab1526507fac5551ec4d81deb2bd41dfb12506b9 SHA-256: 7ca7ff9181854aaec5554a84bcf39c2b06bec288b542b5c76dcfd353d10e6b03
122 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 0.9864

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.online/app/431946152/roblox-imagine-game-hack PDF link annotation
    • https://lib.unitri.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/pokemon-go-free-bag-upgrade_GM1094591345.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-lua-scripts-hacks-money_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-cheat-free_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
stream_004_off00005187.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5187 27216 bytes
SHA-256: 28a42f62d5d3628185b48f3e02206246712ec433066ceebf914ecf5859b51877
font_01_sfnt_off00008f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F18 18680 bytes
SHA-256: a55166a074bb895a998fc6ba58d68b2da5fbde3090d9bd557b4756abe288ee64

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