Malicious PDF — malware analysis report

Static analysis result for SHA-256 342927d4206e5463…

MALICIOUS

PDF

44.3 KB Created: 2021-05-17 21:44:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2fcdc60a560b24248b914fa101d82c10 SHA-1: 34039ee4c0c4de31b57da6191afe3b75b00a2d3f SHA-256: 342927d4206e546349e2521ae9669b399493632271071fae5e7384711c36d3d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free spin generators. The primary malicious link identified is https://netcdn.xyz/app/406889139/100-free-spins-on-coin-master-game-hack. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these sites, likely for further malware delivery or credential harvesting.

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/406889139/100-free-spins-on-coin-master-game-hack In PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004963.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4963 24704 bytes
SHA-256: b154168dd583bcd0b969f2516d71a4e2969b2addc501f627e7dd5ae6919f0cf3
font_01_sfnt_off00008163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8163 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 18164 bytes
SHA-256: bbb0863b6b56e230973ea45e87d56f99f1d326b285d23dffe78eb4756b106867

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