Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9978d0fbc678561…

MALICIOUS

PDF

33.2 KB Created: 2021-06-28 19:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a24c545d1e622809cc53b718d8cdec25 SHA-1: d701d31673de2b6267222cde9ef5a7f0ebbc78f8 SHA-256: d9978d0fbc678561d0137f23f0091962ef4bbb885bd74fd4be2322d857c4758a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains lures related to free Robux and game hacks, directing users to malicious redirector infrastructure. The primary malicious link identified is http://netcdn.co/app/431946152/is-there-a-free-way-to-earn-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely leveraging embedded JavaScript for redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/is-there-a-free-way-to-earn-robux-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-gratis-hack-para-ordenador_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-in-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-unlimited-robux-and-tix-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-ios-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/c-design-roblox-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-pc-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/pubg-uc-hack-2021_GM1330123889.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-proof-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-codes-pc_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/ash-shirt-kalos-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-free-download-windows_GM479516143.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_off00002af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF5 22312 bytes
SHA-256: a064551c619d6402aa06e115f2c2fec476662a4483a2461984e228ae1f30b8a8
font_01_sfnt_off00005c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C75 19260 bytes
SHA-256: 6a9d2e3be3d18828b78778b24ee9299efc9124f561749d3155302b1014dd3200