Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53569d9de16d6d4…

MALICIOUS

PDF

44.2 KB Created: 2021-05-17 05:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 393d89e4560cd3894fd30b522878478f SHA-1: 6ab5fa2178586da50a9e9d659d698109cc8cacd6 SHA-256: f53569d9de16d6d43e0fc39c5734c40f4c59235717e6d39d062bc291a8fa4181
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising "Coin Master Hack 2021 Free". The document body and embedded URLs suggest a lure for users seeking game cheats or hacks. The primary malicious action observed is the redirection to potentially harmful websites, likely to deliver further malware or conduct phishing. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-hack-2021-free-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/robux-codes_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_off000046e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E4 24832 bytes
SHA-256: 37cd3a7d6ab6bc41e5cff4fb92eb78b4f61df73c1873931ed2f1583d85a95fc9
font_01_sfnt_off00007f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F46 18284 bytes
SHA-256: 24548c4fb8e2ba96ea34c2ab549c5298a51cd3d4936d0c2ae8965e87a81b14d2
font_02_sfnt_off0000a14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA14E 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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