Malicious PDF — malware analysis report

Static analysis result for SHA-256 334ceb4714ba0406…

MALICIOUS

PDF

43.8 KB Created: 2021-05-16 02:41:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db2a9446eafce7da919e23c0bed2e2e5 SHA-1: 7e8521d060b60787edd7a14d2b0c0876ce02e967 SHA-256: 334ceb4714ba04063de41504e59b3157b61b881c1dbd282a8a856f7a8ab8d3dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to redirector infrastructure, specifically promoting 'free Robux' or game hacks. The primary malicious link identified is https://netcdn.xyz/app/431946152/is-there-a-way-to-get-free-robux-game-hack, which is associated with a lure for downloading potentially unwanted or malicious files. The document body and embedded links strongly suggest a social engineering tactic to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/is-there-a-way-to-get-free-robux-game-hack In PDF document text
    • http://repository.ummy.ac.id//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-instagram-free-spins_GM406889139.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
font_00_sfnt_off00004b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B20 26580 bytes
SHA-256: dd5c3c743c302fd45c1538c7f7b43e50fed2daa313319c42507d9f17ec153c68
font_01_sfnt_off000086e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E1 18892 bytes
SHA-256: e2ca2daecae93cd27ff1d51a172310d30bada5b25af9f9600d3ad780ee102f76

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