Malicious PDF — malware analysis report

Static analysis result for SHA-256 7264928475d20dd0…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 15:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f94074a9a070593b01fce29dad309c3f SHA-1: 311cf4de118685e8df42cdf9c1e6c037b7a9ddb9 SHA-256: 7264928475d20dd0a8b803ba5211df71a422e2fd7fd39876267af12a8ab0ea40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising free game currency or hacks. The primary lure URL is http://netcdn.tw/app/431946152/free-roblox-gift-card-codes-workind-in-2021-game-hack, which is designed to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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.tw/app/431946152/free-roblox-gift-card-codes-workind-in-2021-game-hack In PDF document text
    • http://library.umla.ac.id//repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-free-to-pay-or-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/add-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-cheating-girlfriend_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/draw-free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-root_GM406889139.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_off00002e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E29 21616 bytes
SHA-256: 7df75708c13af58a76c925d885c0d6ccba11c5809bd94dae4105e38f1daeef79
font_01_sfnt_off00005ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDB 19632 bytes
SHA-256: e22af962cd54d5c016ca60cce8957cfc0d88f456b4eb86d2ba57a1d254aab930