Malicious PDF — malware analysis report

Static analysis result for SHA-256 edce81d324b4b8a5…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 20:36:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0b3edfb124c1fca1c15e8689f4fcd3c5 SHA-1: bdd9e2beeca959960d625294ec3c6d03e8450a41 SHA-256: edce81d324b4b8a51d1bbad50eb467b19db7abb833cb79b2f8b5dda07f9d7f6b
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-co-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/fiverr-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/cheat-engine-for-roblox-phabtom-forces_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-win-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/cheat-roblox-jailbreak-2021-tp_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/websites-that-give-you-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-royale-high-cheats-for-diamonds-2021-on-xbox-one_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-ice-cream-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hacking-computer-destroyed_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/tiktok-free-view-jio-phone_GM835599320.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/rbx-claim_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/redeem-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-match_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-urbis-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-generator-com-hack_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_off00003057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3057 22252 bytes
SHA-256: c20b3fe98b4245419be10ac10fbf8681e9ede4d254f4014667e6ddbcab73a537
font_01_sfnt_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 18716 bytes
SHA-256: ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b

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