Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef7edc43aeff345…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 17:12:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29aa1d82de424877ef3901ce8af3b31a SHA-1: 7c5a025da3206bc7bc116723a7925c672dd07deb SHA-256: bef7edc43aeff3456870712ec3fd19970ca41c20577401195ee22d256b1477c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to websites promoting game hacks and free currency for popular games like Coin Master and Roblox. One primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-5-10-2021-game-hack, is identified as a malicious redirector. The document's structure and content strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

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/coin-master-free-spins-5-10-2021-game-hack In PDF document text
    • https://www.croatia-flyfishing.com/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/rbx-earn_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/roblox-hacked-com-2021_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_off000048d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D9 25692 bytes
SHA-256: 2f8f867f14d2916ec2ce55ea08f6716e4aa660c1fc3e6d1a105e1d5c1b784ab4
font_01_sfnt_off000082fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FE 18420 bytes
SHA-256: d2e643d168acf14731b6ae3c06af54a4078da994fa1104135df6e99201a30058

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