Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05b062c8729cf44…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 11:18:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 95d80e161af4198bd599b700daed1804 SHA-1: d49dc30384aca87b82f12c538d64bcdf8f71096b SHA-256: c05b062c8729cf44f7f23a15b5c57cf3d6df7ec05cd5f9fa315c37b15a3c3376
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and generators for popular mobile games like Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection is the primary objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-daily-free-cards-game-hack In PDF document text
    • http://diatecgroup.com/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/collect-robux_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://diatecgroup.com/images/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://diatecgroup.com/images/coin-master-hack-pro_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
stream_003_off00004964.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4964 24716 bytes
SHA-256: ae109946979b62ff3b77635a2988f5ed89220a50a9825eb7369827e2f1163e06
font_01_sfnt_off000081f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F0 18308 bytes
SHA-256: 0f25ff19bbb96414be395e76d71be840701757741be7b1a455de3e70536cac98

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