Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a623d9bf20956d…

MALICIOUS

PDF

49.1 KB Created: 2021-06-08 18:28:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5e6305b3b4135528f3849df9a247ef6 SHA-1: d5d7cb146e6be720fc57c1e55b290b77d7b9849e SHA-256: 54a623d9bf20956d73656e6fd68463727ad7069b89c517efb92949822f2c9e0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and websites offering game-related cheats or hacks. The primary link, https://netcdn.tw/app/431946152/free-online-games-like-roblox-bloxburg-game-hack, is identified as a lure for free generators and game hacks. The document's structure and embedded URLs suggest an attempt to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

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/free-online-games-like-roblox-bloxburg-game-hack In PDF document text
    • https://www.jjpremiers.com/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/pubg-365-uc_GM1330123889.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
font_00_sfnt_off000051ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51EE 25448 bytes
SHA-256: c1153697a650130e5d0b0cf143c99afcece82c92fbdfb12f5feabcfd4a28c87b
font_01_sfnt_off00008d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6B 4040 bytes
SHA-256: 2abff9653c90df879c40a736547587081a28055546953ea74952399216230f57
font_02_sfnt_off00009ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC2 19152 bytes
SHA-256: d2f262398a9b526f4aa2c631f62a696cd70eaed8698714fbee96746d804f8326

Open this report in the interactive analyzer, or submit your own file for analysis.