Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c80819813010f5…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 13:07:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: acdcb5c4a2b0b5b42eae800ad5a2c59e SHA-1: 1f0472780e9532fc9459a0c2d98b77819de77ad8 SHA-256: e1c80819813010f51f8d320662f025e96a34b34796538a5956d1cfaeb9a2c97b
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/406889139/moonactive-free-spins-link-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-jailbreak-hack-github_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/tbc-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-gamer_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-find-out-who-hacked-your-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-online-virtual-world-game_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-targets-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-vehicle-simulater-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-hack-computer-no-app-download-computer-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/5-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-promo-codes-2021-june_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003252.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3252 23216 bytes
SHA-256: 83d56c5211bb93eb65f8ff437d359bd163223b1cc30a39be0ffc9a19a9255c22
font_01_sfnt_off000066bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 18460 bytes
SHA-256: 8e27bc3ea3f62741a2ad6ac39f6be034d140b49cb90253f8adcdccfecdbeaab1

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