Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2690fe1b9ea0011…

MALICIOUS

PDF

44.8 KB Created: 2021-05-17 23:18:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 28bda36a1e068a965c724cf207c0d2f9 SHA-1: 2791752c552bc24716b010525dee3873aacaf3e5 SHA-256: e2690fe1b9ea00114db0bd261692c2ae14bee2bee8ea198ffc7e22e13e0dcaa6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free coins' and 'game hacks' for Coin Master. The heuristic firings indicate a lure designed to trick users into visiting these malicious sites. While no scripts were explicitly extracted, the PDF structure itself facilitates these malicious redirects, likely serving as a lure for further exploitation.

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/free-coins-coin-master-game-hack In PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-home_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://puslitbangperhutani.com/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.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_off00004727.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4727 26508 bytes
SHA-256: 30eb188d48b47639a3ee533830ae646ef49b0b8cdacd353497361bf81d23a0ea
font_01_sfnt_off000084a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E55 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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