Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d147cbe249fca1…

MALICIOUS

PDF

40.8 KB Created: 2021-05-13 18:23:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7fda2f1dde80f8d1b8a6beb9d3e19155 SHA-1: 60f849c24296a227d0ac30ca3c21d2184bcfe713 SHA-256: 08d147cbe249fca183138f1dafd26b5d73d5519dad5e24608e8a23abbb0cc4e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free currency generators. The presence of a 'download button' heuristic and the ML classifier strongly indicate malicious intent. The document's content and embedded URLs suggest a lure for users seeking in-game advantages, ultimately leading them to potentially harmful 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/freespins-coin-master-game-hack In PDF document text
    • http://sid3r.com/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://sid3r.com/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://sid3r.com/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/op-rewards-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_off00004494.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4494 25020 bytes
SHA-256: bc8ddc0b306600395079ad5b4ae170e7d6c0a5827886e6e13a50b6be68716af2
font_01_sfnt_off00007e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2D 17884 bytes
SHA-256: c31d741d4f965ff4f04c8652eedf0010194718e591e89cbf3157ab9f7afc750f

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