Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2864ddb289b79bd…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 21:30:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7d07d9674bef1e96e5a1e66a8bea609a SHA-1: 2a9c28fec2d706e352e9032ec6dd23fea486adbe SHA-256: e2864ddb289b79bda01a5e4a685c1fc7717adfc1cc3e718ad1183c081551a5d3
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/free-robux-place-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-stuff-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/jailbreak-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/can-you-make-shirts-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/secret-robux-hack-revealed-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/new-hack-for-roblox-deathrun-2021-pc_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-hack-that-really-really-actually-works_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/www-roblox-com-free-robux_GM431946152.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
font_00_sfnt_off00003034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3034 22756 bytes
SHA-256: 2779cd6a7b8e8a9ba3c42ea2f11a076914a4ebe92088fd6cadc360c424adb786
font_01_sfnt_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 18944 bytes
SHA-256: b09bc8733bdd60a9e3d807131716c526420abed0d95e213ec937364ccfb38658

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