Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1b41f37195bd99…

MALICIOUS

PDF

43.6 KB Created: 2021-05-17 11:12:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 23ddecce1ebd8e9071e4e1719947f68d SHA-1: a4e51bfc3393bba07dc55547ff1b0486a5ed5ca7 SHA-256: 1a1b41f37195bd99f3445402a3a9440d03db7c9a42a7bdf00a91ee30e1b9c7d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be a Coin Master hack, directing users to a URL that is flagged as malicious. The document's structure and embedded links suggest it is designed to trick users into visiting potentially harmful sites, likely as a precursor to further malicious activity or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/june-29-coin-master-hack-no-human-verification-game-hack In PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hack-spins-download_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_off0000490e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490E 29340 bytes
SHA-256: a720161a48cc6c9586759b650b7296ff4afc048c743e9e2739360e7e737dc0ef
font_01_sfnt_off0000870a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870A 18704 bytes
SHA-256: ad2bbd3131f8bee0b8f81db1f1c55f183910266b6691054624cf4eb89d04d61e

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