Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e0480a94a0aef9…

MALICIOUS

PDF

35.9 KB Created: 2021-07-02 00:51:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b7f805ed51120dfb6ea02a293a40af16 SHA-1: 6c370d047a7f2b9a935c90083ebd4a9a65d4b88b SHA-256: d0e0480a94a0aef96783c3e5117681d963c5da51f50582ba7fa72a76e40c2131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free Robux and game hacks, which is a common social engineering tactic. It contains a critical link to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/games-that-give-you-free-robux-on-roblox-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

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/games-that-give-you-free-robux-on-roblox-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-create-a-vip-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-da-hood-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-in_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-roblox-with-dll-injector_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/obbys-august-2021-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-download-ps3_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.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_off0000328a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328A 22936 bytes
SHA-256: c3ad67222936d9a7096b0088c795daf189eab2d1ed35b03af1d62bf8e6e0714d
font_01_sfnt_off000065ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 19716 bytes
SHA-256: 80c0c12e9ced77ae4147231438d545703f9dc3f1b28337b7cfd05af083eff2c5

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