Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4849f37cf94d35b…

MALICIOUS

PDF

50.4 KB Created: 2021-06-02 10:16:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a931e81a054611032e501ecc6dc9e6f SHA-1: a9d93f70bfb703ebc78dbcb47161806bb956bd86 SHA-256: d4849f37cf94d35bbb5ae9a686ebb4e479c0c9d6e6cfa9ab9c24787d917882a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'Hacking Robux For Money' and contains multiple links to known malicious redirectors. The primary URL, https://netcdn.xyz/app/431946152/hacking-robux-for-money-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/hacking-robux-for-money-game-hack In PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://i-koinoxrista.gr/images/free-robux-2021-no-verification_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
font_00_sfnt_off00004f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F17 30980 bytes
SHA-256: 7632819b21a1bed6631f4764bb3b6f0e6f1eae1cabec49f0759bed01a84f032a
font_01_sfnt_off00009583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 2984 bytes
SHA-256: 2df87bbe4e27b27e34c872c092d0522acd977d05f5cbde7ed5e1fdfeb59cb318
font_02_sfnt_off00009fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD1 19196 bytes
SHA-256: 6f37060b55978015b670e59feeb61e6583f0498a4f3453e5ea4d2f584eba3972

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