Malicious PDF — malware analysis report

Static analysis result for SHA-256 5111ea0f1850d745…

MALICIOUS

PDF

47.9 KB Created: 2021-05-20 02:55:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0941b67500d501b4b02c39829276eec8 SHA-1: 6d25a3b2ce7e9eb4e8bb8f0096b4f77781e4acf1 SHA-256: 5111ea0f1850d7456270ddee31facd0b8f0c3835b0c68663b33a178ea6467ad3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one specifically identified as a malicious redirector. The document body and embedded links suggest a lure for free game currency or hacks, a common phishing tactic. The presence of multiple redirector links indicates a high likelihood of malicious intent, aiming to funnel users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/835599320/tiktok-free-view-500-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004608.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4608 26908 bytes
SHA-256: e64f5dcfa02810c91cbcaf11fe4068203045915ff4c29a2eeaa7b8c169f23106
font_01_sfnt_off000081fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FB 3432 bytes
SHA-256: 1ddb9d31cef3323f9696250169f2b8a13528fe9769befaaaef91402d26dd8b2c
font_02_sfnt_off00008db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB0 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_03_sfnt_off000098c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C4 18060 bytes
SHA-256: 15581bdb718664ea70ceecf911dbcceaf39471243f5fb37b44987fac626dc702

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