Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e02f708e9f5c6d…

MALICIOUS

PDF

31.8 KB Created: 2021-07-16 06:08:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: de0316b6678a3053d6a4a842422eb21d SHA-1: 5611159a952d96c6480ac672c132cbd2c90674ed SHA-256: a2e02f708e9f5c6d20400368cfe0a19635f0f032b9e84f3e1fbb2b1adb58597a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The embedded URLs, such as http://netcdn.tw/app/479516143/minecraft-login-free-game-hack, are designed to trick users into clicking, likely leading to further malicious sites or phishing attempts. No scripts were extracted, but the document's structure and embedded links strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/minecraft-login-free-game-hack In PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-in-roblox-soul-stone-sim_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/blox-rewards_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/roblox-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/groups-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spins-link_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_off00002c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C74 21368 bytes
SHA-256: af0c9e4b3e73ec8493fe9b75f06b73e17c115271c57218346cead985936bdd19
font_01_sfnt_off00005af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF8 17996 bytes
SHA-256: a07e2ad8fd79bb30e6fc1ebe6b3b8a9b32aa8410594bf0891ac0147b7718a067