Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e29ca2272c2a1af…

MALICIOUS

PDF

41.1 KB Created: 2021-05-11 07:31:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 90ac16793a80c47570d42f9907eda5e7 SHA-1: 78d132558e1879a86492390535c90f8833dd4817 SHA-256: 7e29ca2272c2a1af405e64d3a693820d46f3ce0d4fefc201cf4beda90a56e6a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free spins for popular games. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-today-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-today-game-hack In PDF document text
    • http://library.umla.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-cheats-and-hacks_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_off000047bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47BB 23696 bytes
SHA-256: 46184548059391033d0cab41bdd3eedd6a6de4a040cb7c767e0ee7763cbe3b42
font_01_sfnt_off00007c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3A 18812 bytes
SHA-256: 705c5903f824403b328e8e9dbd2ab52a650d097fc3c0d4bbd34be772086d041a

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