Malicious PDF — malware analysis report

Static analysis result for SHA-256 01da5f139d4f1099…

MALICIOUS

PDF

32.8 KB Created: 2021-06-19 09:46:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f3da87cfcc7e2739144de6e94353db6b SHA-1: 967ee1714e5545ea95e727bf27182f4af9a667a2 SHA-256: 01da5f139d4f1099e5b424ad7652dfc7350d753bd94cc5942dad3abbf1dcdadc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are identified as malicious redirectors, specifically leading to a lure for game hacks and generators. The document body, though partially corrupted, contains URLs that reinforce this lure. The primary malicious URL identified is http://netcdn.co/app/431946152/inject-hack-roblox-ingame-code-game-hack, which is likely used to deliver a secondary payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/inject-hack-roblox-ingame-code-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/assassin-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/longshot-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-no-inspect_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-dat-boi-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-gear_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
font_00_sfnt_off00002cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB8 20904 bytes
SHA-256: 639ffbfb307bab5d83dea3ec13f4ccde4bfbfa0b83f06c5b2b961606cbcc2742
font_01_sfnt_off000059d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D2 19384 bytes
SHA-256: 6fad1a1cac6e10b8386d83bf30d491902c80a9ef13db0b7f647d1d099fd240ca

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