Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7cc2617990b029…

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 23:24:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e2518497ded00ef9e88e6ac8112f1a8b SHA-1: afb9ed80b4337472908f794e8bbfc14685905eb4 SHA-256: 0a7cc2617990b029e7fefd8c1fb360d275325b4331da8beb5c40a2e221467c56
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.co/app/431946152/hack-money-vehicle-simulator-roblox-game-hack PDF link annotation
    • http://repository.ummy.ac.id/repository/how-to-fly-hack-in-roblox-deathrun_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-working-strucid-aimbot-hack-2021-august-pastebin_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/hacking-a-roblox-scammer_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-apk-free-download_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_002_off00003010.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3010 23024 bytes
SHA-256: c5815472f965d56a8f8048bc8e3fc7ef3526d06567f20582d7dbadc0bba541a0
font_01_sfnt_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 19956 bytes
SHA-256: ce6c523c76b786dbcd6d06fdc06ebaffbb0ba64a59f4dcdf5ef5930648ba874c

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