Malicious PDF — malware analysis report

Static analysis result for SHA-256 315ab0e82a058b49…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 14:06:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 652ac14b2133123e1441a31130e3fd95 SHA-1: fdb49af7508916e8ba57ddcc3383366e2384e7e3 SHA-256: 315ab0e82a058b4997c8420188cd356177c80547c24d9787b6b58c1236971794
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and sites offering free game currency or hacks, a common lure for phishing and malware distribution. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or exploit kits, aiming to compromise the user's system.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

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.online/app/406889139/coin-master-pc-hack-game-hack In PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.armera.co.uk/uploads/files/files/minecraft-hacker-mask_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D95 24016 bytes
SHA-256: d813f6e86efeafdaceb3b7edc246ab74dc1e7d9ba2949848286b9f8b96a71126
font_01_sfnt_off00008481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8481 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00008e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6B 17868 bytes
SHA-256: 2afdedecde820afe22901ca35ab1de7d9bd06462c55bbc4b8ddd703c94e78653

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