Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3e099040656330…

MALICIOUS

PDF

41.2 KB Created: 2021-05-17 23:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 39c745560b1f204df2cd4adaee4bfcff SHA-1: 0bab5f90b689393e8b7701c4c19e180cd2928f28 SHA-256: fb3e09904065633082304d76aa7df26213fe0013b739e3605d9e2a63a0cb69d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'game hack' and redirects to malicious infrastructure. The embedded URL https://netcdn.xyz/app/406889139/hackear-coin-master-sin-verificacion-game-hack is associated with known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at tricking users into visiting malicious 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/hackear-coin-master-sin-verificacion-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-spins-for-coin-master-2021_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004828.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4828 24488 bytes
SHA-256: b32560c12cae826119e84ee6fda3ed8b99e3236b38631315ba16951828235a65
font_01_sfnt_off00007fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA6 17848 bytes
SHA-256: 0a8f59b95944f0c37e1e8bd09bffc7e8086f34ba5aab4310990f1b5d227b6c8b

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