Malicious PDF — malware analysis report

Static analysis result for SHA-256 587bbfc724e08086…

MALICIOUS

PDF

41.1 KB Created: 2021-05-14 12:09:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e45c0c939f28558a3bceed46e3efec90 SHA-1: 672efa8dd25662244acf57234f864d3ddc874db9 SHA-256: 587bbfc724e08086fedf848cca1634a05959d34d2e6ea04afce941133ce1ccd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The embedded URLs are designed to lure users into downloading potentially harmful files or visiting further compromised sites.

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/como-hackear-coin-master-gratis-game-hack In PDF document text
    • http://bpbfloydinc.org/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/login-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/download-apps-for-robux_GM431946152.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_off0000490f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490F 23804 bytes
SHA-256: c4dfab8a9533a0ce4cec667792824d5a9cc1b3ebed232f50bffacfa382f615c6
font_01_sfnt_off00007f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1A 17976 bytes
SHA-256: a3e9012f8e1f9d61ddd4f1d4d38951fb16594134e53f2a4a4cbd6e03026951a8

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