Malicious PDF — malware analysis report

Static analysis result for SHA-256 7626982d9a84fdae…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 03:06:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 18e22401ef7a8e2e52c8f182adfeea18 SHA-1: 73a5682d76198b44d040f2037d6070e93caedb1f SHA-256: 7626982d9a84fdae2b6588abafc8e3adbbd736b2937d20995c19637fa5d3a1c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirectors, disguised as free game generators and hacks. The heuristic firings confirm these links lead to malicious infrastructure and are part of a redirection lure. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites for phishing or further payload delivery.

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/free-spins-coin-master-2021-no-verification-game-hack In PDF document text
    • https://vstarnippers.com/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-earn-robux-by-playing-games_GM431946152.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_off000049a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A6 24900 bytes
SHA-256: a8ba2ddd7e32091c155992a57d1c192e28ddae6c1071e4eebfb7afcef625d5fe
font_01_sfnt_off000081c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 18420 bytes
SHA-256: 57b0a04a26879f0d3434b42e55f704f41eabe83a94c97134347b08b555bbb634

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