Malicious PDF — malware analysis report

Static analysis result for SHA-256 8703357713790d18…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 21:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c576eddf360e687ed374b2a91edfada4 SHA-1: 6b5dcc99091bf1e0981af0436b0d0b01d4661886 SHA-256: 8703357713790d18f5235338e6ec85cfd820363ec94f0b90fe6a845c7f7e6244
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'generators' for popular games. The primary lure URL, http://netcdn.tw/app/406889139/coin-master-hack-safe-game-hack, is flagged as malicious. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt designed to lure users to malicious sites.

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/406889139/coin-master-hack-safe-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/what-to-do-when-you-are-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-tickets-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-hack-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/best-jailbreak-hacks-for-roblox-ooooof_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-dominus-userscript-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-how-to-hack-welcome-to-roblox-building_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/game-give-free-robux_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_off00002d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D79 22788 bytes
SHA-256: f0cc6ba6b82c91084b722a12b87cbec4627b31807898b9204bd95661372a46f4
font_01_sfnt_off00006067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6067 18004 bytes
SHA-256: bea68624d2938e30e5ed31d5e027a71eeb46638e9597be4d5089086e329e68f4