Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f849691c056d61…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 00:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e2a046e216ebf18f50b43aaf7a2b5349 SHA-1: 1e8527ffcdab20d51eac59d8461f185e89c74d4e SHA-256: f5f849691c056d61859297201b336fa7dd5c45b4b8242cb37547d638ddc972a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting "Coin Master Free Spins Cheat Deutsch". The document body and heuristics indicate a lure for game-related cheats, likely to download further malware or redirect to phishing sites. No scripts were extracted, but the presence of malicious links and the lure strongly suggest a phishing or malware distribution attempt.

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-free-spins-cheat-deutsch-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-game-download-ios_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/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-program_GM406889139.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/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coin-master-spins-2021_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AE 24088 bytes
SHA-256: d9206902fc744138712b900bf65f458bde39999d96415b0b7e48f894e6c21d73
font_01_sfnt_off000080bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BF 18360 bytes
SHA-256: 29c800506a03a3e1cb5f7ed9e4ca185df1ecbea4e67b5de69ba2e14adc8da31f

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