Malicious PDF — malware analysis report

Static analysis result for SHA-256 8884ae0bc7132dc0…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 09:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af89858f6db4ffaa97db7ab2df5d49c7 SHA-1: 820cf2f87fed09170bb7688a85e8178616481967 SHA-256: 8884ae0bc7132dc093a98d35aa57dd0509614269352edee1d32ca5d826b2f53f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or free spin generator. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content or further phishing pages.

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/mosttechs-coin-master-free-spins-game-hack In PDF document text
    • http://ctr74.net/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://ctr74.net/images/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://ctr74.net/images/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/roblox-system_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/robux-giver_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/i-need-robux_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://ctr74.net/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://ctr74.net/images/daily-free-spins-coin-master-2021_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_off0000474a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474A 24900 bytes
SHA-256: 723528663cdc5b42b19579f458037e20268dead95d8ff7b1373724e6d144727d
font_01_sfnt_off00007fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE6 18052 bytes
SHA-256: 3faf773e8c2ca441acd39540fa8d38ff64b8ee6ceaa8632d1425631ed858a994

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