Malicious PDF — malware analysis report

Static analysis result for SHA-256 361311e888dcc12f…

MALICIOUS

PDF

47.7 KB Created: 2021-05-13 01:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b2055be8fe5f57a79c176f8240877f7e SHA-1: d5608365ba3fedd7a4f4e46a01160b7c6da04cd4 SHA-256: 361311e888dcc12f85df56825481390ca38367e03b3798200eea8931ef46b86a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a visual download button lure, strongly suggesting an attempt to trick the user into downloading a payload. The ML classifier also flagged this PDF as malicious with high confidence. The primary lure is related to obtaining free in-game currency or hacks for popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/431946152/roblox-hack-me-robux-game-hack In PDF document text
    • http://colsaf.co/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://colsaf.co/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://colsaf.co/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://colsaf.co/images/roblox-bloxburg-hack_GM431946152.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_off00004714.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4714 36644 bytes
SHA-256: a218dc83a630cb8e8a7087617e88d5edcac6cce2f552f1e2d57f1cb55002394d
font_01_sfnt_off000097df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97DF 18520 bytes
SHA-256: a375bd11c65aaa265b5abc99eda8135c05062389b04afd63241033984f92b3c1

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