Malicious PDF — malware analysis report

Static analysis result for SHA-256 57228a333c4b0aab…

MALICIOUS

PDF

48.4 KB Created: 2021-06-07 21:41:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6fbe1238f62aa3b54f4ef3c6ea07654 SHA-1: 4414ac1d9f03689cd3daa2004449b5c41e9512ca SHA-256: 57228a333c4b0aab7844aa87c99dd26abbd19a2813de147419b4a89d4b57e7f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to entice users. It contains multiple embedded URLs that redirect to malicious infrastructure, specifically pointing to a known malicious redirector. The document body and heuristics indicate a clear intent to lead users to further malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/hacking-a-roblox-game-game-hack In PDF document text
    • http://dana1157.com/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/pokemon-go-free-promo-codes-march-2021_GM1094591345.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/tiktok-free-views-trial_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/cheat-teleportation-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/is-tiktok-free-to-use_GM835599320.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-20210-robux-for-free_GM431946152.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_004_off000050ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AB 26632 bytes
SHA-256: a55f7588a9f73359975ab852c7967bc508a96f3d3d6b249fb3a0406c74ee5e85
font_01_sfnt_off00008de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE6 3096 bytes
SHA-256: d05729863dc05721ada29044278030255eeda038236568e8246a87d3a8573d6e
font_02_sfnt_off00009892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9892 18848 bytes
SHA-256: 71a707b45b72bae60b555dbfab32e020b41abc8c5fb5269196b39af23a962eb8