Malicious PDF — malware analysis report

Static analysis result for SHA-256 4643b19bf909ae93…

MALICIOUS

PDF

45.9 KB Created: 2021-05-13 11:47:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0504e09aa332fab0bd7c72b8dbfad4b3 SHA-1: d11295c59f2796e70909cab43c979264f1bbd148 SHA-256: 4643b19bf909ae93f1020f427e8d04287ca48222312bc28dd27b1535bda4c40f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure. The primary lure appears to be related to "game hacks" and "free generators," aiming to trick users into clicking the malicious links. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-70-spin-link-game-hack In PDF document text
    • http://www.centromedicoaurora.it/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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
stream_003_off00004979.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4979 26948 bytes
SHA-256: d44fa569b0a77d8fd5411110f5ca0d8452e0f35058c435a185f66ae59a7ca7ee
font_01_sfnt_off00008724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8724 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off0000910f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 18120 bytes
SHA-256: cf85675b6a38e731fca5e28061fbf46a28a3be773b5a4bb5d31cd4a045e3febb

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