Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba267928e8acb8d3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-15 08:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aefe21bc7df5e2bb3a212d70db02b899 SHA-1: 9ee3f20bd22834b6c0a27c3375acbb037bd6340a SHA-256: ba267928e8acb8d378becd931a357a31687e9ebb3c1b7ca77c0d34020b54e745
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators". The heuristic firings confirm these links lead to known malicious redirectors. While no scripts were extracted, the document's primary function appears to be social engineering users into clicking these malicious links, likely as a lure for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9630

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-shield-hack-game-hack In PDF document text
    • http://www.federicocastelnovo.com/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.federicocastelnovo.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn 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_off000044a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44A5 24788 bytes
SHA-256: 279f61cfada3f04808f48c0dde5ca003c0df63f54b5edc8ade7d88a8cb02148b
font_01_sfnt_off00007c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C02 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off000085a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A5 18128 bytes
SHA-256: 2773020a9ca51f28bcb030d2519f478b200dd757f17da2a4e62f9d950a58fe27

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