Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f0c22899491d3d…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 21:05:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dfdeb46c54d1d32900796cc0c775eba7 SHA-1: 09f6c46e159f7fc3c2edce0d1e59fc92b6cd2e9a SHA-256: 74f0c22899491d3d275805b093de9abd61904cbf3d5a17984f0747497fb64611
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/479516143/minecraft-hacks-wurst-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/tiktok-free-100-fans_GM835599320.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.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_004_off0000553c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x553C 26640 bytes
SHA-256: 133f300aa01a5ebae637df5c4d977634ca9f2f4161dd900256cf1081efa35b78
font_01_sfnt_off00009237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9237 18076 bytes
SHA-256: 3e7497e6bc4bf84e5186ee2c608eda5b15e7e8e7c6854cdd6eb66a0ec10d8832

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