Malicious PDF — malware analysis report

Static analysis result for SHA-256 018348e96247ebe1…

MALICIOUS

PDF

45.2 KB Created: 2021-05-17 17:08:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 66bf43473c3818a0cafe98e75c4d27fa SHA-1: 50bd97c511d69ba7494f7d3653296dacb5485575 SHA-256: 018348e96247ebe1b87f70755092ac3c8fd03272eabf7db118791d808390a26a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free coins". The primary lure appears to be a "Coin Master In App Purchase Hack". While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites. The use of embedded links to redirect users is a common technique for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-in-app-purchase-hack-game-hack In PDF document text
    • http://gruporamos.do/images/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/game-toolbox_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/hack-robux_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
stream_003_off00004b51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B51 24764 bytes
SHA-256: 6d1389708161befd66e7e6897abe0ae397c9c2c646a02edae190f6d8fd7ed4d9
font_01_sfnt_off00008341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8341 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 18352 bytes
SHA-256: 37c61889bff08c2bddd56bfb017dd32b1bdcae49f78bbe236cb4c9fcda307a6c

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