Malicious PDF — malware analysis report

Static analysis result for SHA-256 a901bd10ac53b256…

MALICIOUS

PDF

45.2 KB Created: 2021-05-19 02:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f32afcd7a4d94de4f367358da2dc95c3 SHA-1: bc52457fb9ade9e20b32c2400233ea7ed7fa8838 SHA-256: a901bd10ac53b2565c6e9743da6dc604905ae1aa38ce4fd5fc198bab61965600
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and generators. The primary lure is a "Coin Master Hack Mod Game Download" page. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a redirection chain designed to lead the user to a malicious site, likely for further exploitation or malware delivery. The presence of a visual download button reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-hack-mod-game-download-game-hack In PDF document text
    • http://yogaschooldecypres.be/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/robux-online_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-link_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000482f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482F 26364 bytes
SHA-256: 85d18c06c1bde2c1984e670b338544ee238352c62e2450af648c9786225d442c
font_01_sfnt_off0000838e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838E 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00008d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2F 18556 bytes
SHA-256: 6ae4edda5b33261e183c1fbe66246d10fbe6e53c76ae39713cb0d7eff25940de

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