Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7454e9992e77cfd…

MALICIOUS

PDF

44.6 KB Created: 2021-05-14 21:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 681cbe11d0081f3e63a69884e89262a9 SHA-1: e61d1b6ff9f3d88cb845f4fc595df084d2104dc5 SHA-256: f7454e9992e77cfd77e99ed9b3539fe30acef1b8982e22f5cc5f1dd94236df78
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 'free generator / game hack' lures. The primary redirect URL is https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coin-link-haktuts-hacking-news-game-hack. The document body, though partially corrupted, contains similar URLs and text related to game hacks and free spins, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-free-spin-and-coin-link-haktuts-hacking-news-game-hack In PDF document text
    • http://legitame.org/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://legitame.org/images/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://legitame.org/images/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://legitame.org/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://legitame.org/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://legitame.org/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://legitame.org/images/spin-links-for-coin-master_GM406889139.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_off000047d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D6 24448 bytes
SHA-256: 5d3b1a4d9a5363b73c5ddecfa082deccc38218263564ffbff3b242d1fb224f9a
font_01_sfnt_off00007fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC9 2932 bytes
SHA-256: 6a728a9066ba65435d6380d78d87d8ee4d5553deba8217e5dee5b64eeb83287d
font_02_sfnt_off000089f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 18824 bytes
SHA-256: ef8f09fc3c17cc4f26b4837a2aef37de344b1ca430b1a31f5cb27c991d5625de