Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b4d0774ebe96e8…

MALICIOUS

PDF

41.7 KB Created: 2021-05-17 10:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2cf963c39985e5cd4f85564b6237bb23 SHA-1: 91ed122588f60589bc2be2475f104edb9af48d4c SHA-256: e0b4d0774ebe96e8f752c113fc474638aaaabfc8a274c5d2d9c1a5dbb863c44c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game-related lures, such as 'Coin Master PC Hack Tool'. The heuristics indicate that the document is designed to redirect users to malicious infrastructure, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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-pc-hack-tool-game-hack In PDF document text
    • http://hospitalsalamanca.cl/images/robux-rewards_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-install_GM479516143.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_off00004a61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A61 24212 bytes
SHA-256: 99272b4f14978f1348156f14f313955dbfa113d209adec971ab5141dadfab2e0
font_01_sfnt_off0000819f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819F 17944 bytes
SHA-256: c961cc6170e33614cb17d128388173b4a7f7b730d965861fef337064689bdc5a

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