Malicious PDF — malware analysis report

Static analysis result for SHA-256 c887772dfe73c77d…

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 14:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33678100fb26a904e6ba3ac1e8bca6f6 SHA-1: d66353f1c5f8330365b2652741af4c4a432a7e66 SHA-256: c887772dfe73c77dea40206bfd7b31d93968861f70b4c64d30d1972fa234ca96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that promise free in-game currency or hacks for popular games, acting as a lure. The heuristic firings indicate these links lead to malicious redirector infrastructure. While no scripts were extracted, the document's structure and embedded URLs suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-websites-for-roblox-game-hack In PDF document text
    • http://nalmpantistractors.gr/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/robux-hack-v1-0-pastebin_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/room-roblox-game-cheats_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-roebucks_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-roblox-exploit-admin_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/what-cheats-can-you-do-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/pubg-uc-kaise-kamaye_GM1330123889.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://nalmpantistractors.gr/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5C 22416 bytes
SHA-256: 74bcc895bc4114ff0f021022c37bfa9585dd8df8e736e713c8aa1da6e82fceb5
font_01_sfnt_off00006116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6116 19212 bytes
SHA-256: a732370aedffddb4043999c00487289281784aba6bec63b86db440c152a25914

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