Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef03228ec4d046e…

MALICIOUS

PDF

46.8 KB Created: 2021-05-16 19:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa0f3eaefcde06ce806afa3d22197623 SHA-1: 957fbeeb0fc77f758f16b99862de2b05154dcc7c SHA-256: 6ef03228ec4d046ef5515be1d8127c59b6aadf31b12430f880a954acf744a624
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game currency generators and hacks. The primary lure is for 'Coin Master' and 'Roblox' related cheats. The ML classifier also flagged this PDF as malicious, supporting the observed malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-spin-coin-master-link-download-game-hack In PDF document text
    • https://farkas.de/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • https://farkas.de/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • https://farkas.de/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004916.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4916 28220 bytes
SHA-256: 84a823bef2ccb6f70f7f71d718b4300a7a981e4f99caf7343a5e232e4ff858e5
font_01_sfnt_off000089f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000093a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A4 18636 bytes
SHA-256: 136b79965a5248ac6e7935dc786215b4277752963c3c0798ae07969220183c9d

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