Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbcf10e5126d453b…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 10:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea414c98f2899a3b0ff1de0dd378adcb SHA-1: 55b0f516b211960cb2b1135eca2c044fc11fc713 SHA-256: cbcf10e5126d453b00b9b2cc6db8561216865217e4a9190bf4d154480ce62091
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, under the guise of providing game hacks and free currency. The document body and embedded links strongly suggest a social engineering lure to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristics indicate malicious redirection and potential for further exploitation.

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/card-hack-for-coin-master-game-hack In PDF document text
    • http://ansacare.com/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/free-bobux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/hack-coin-master-without-human-verification_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
stream_003_off00004a6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6B 25376 bytes
SHA-256: 26828f3d86cec68f38db5f4e6a9f670e48ace786ee7e35c9ceea1561ce3ab0e2
font_01_sfnt_off000083c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C6 18056 bytes
SHA-256: 16c04f841c276c9143b9cdeba32c018779ebf720d5ca55aa256a698217b90b2b

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