Malicious PDF — malware analysis report

Static analysis result for SHA-256 7874c2140f594b12…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 03:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07e64aa0bc9d760e4e39bf8daffc9e6a SHA-1: e06c5cbb5a2c79f0f030340a36231567ff8064ed SHA-256: 7874c2140f594b1292e3eef670db02a63b0e4d6c71c1c6704363dcc21f3d28ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to host or chain to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-link-2021-game-hack In PDF document text
    • http://henrikedmark.com/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://henrikedmark.com/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/roblox-system_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46CD 25436 bytes
SHA-256: 7c72ed08c11c04aa2e62441ed842d946898bcff006af2aaf0c0d36b467fed016
font_01_sfnt_off0000805a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00008a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A45 18456 bytes
SHA-256: 405c435adaafa0da304b7a4986d8f56c56dc87ed278d5cff2ac0c57977d8d7e3