Malicious PDF — malware analysis report

Static analysis result for SHA-256 47233badebbc82a1…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 18:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0d56943b4c0e44971f557e05ae9e1d1d SHA-1: 29efe70539e77b02a6f512c028eb9e5c585b6f45 SHA-256: 47233badebbc82a1511397382a51c13a466bb89681ac78a9f671c1d6c939179c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generators' for popular games. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites, likely for phishing or to download further malware. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/free-coin-master-hacks-game-hack In PDF document text
    • http://lib.icbc-indonesia.org//repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004957.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4957 24472 bytes
SHA-256: 08ce809edee2c0355caaafa42dd20ce11a3267d677082917a17d92e7f08bd732
font_01_sfnt_off000080cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CD 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7E 17880 bytes
SHA-256: e9d83edb2e1b044691ef11a4057c4d6cc11a4a50971021398c2c06fbe5537458

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