Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85f07b1da7766ad…

MALICIOUS

PDF

40.8 KB Created: 2021-05-19 20:13:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e79f598a14b31831b5f97ef53cabe85 SHA-1: 54f5f82f440d9dc544f2d04272582e95ce67db59 SHA-256: e85f07b1da7766adb74f5e2167069c53de9fa319f78ec9246eff6267021bed38
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to potentially harmful content, likely for further exploitation or malware delivery.

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/1330123889/pubg-uc-buy-bd-game-hack In PDF document text
    • http://galletta.com/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://galletta.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://galletta.com/images/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://galletta.com/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://galletta.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.midasbuy.comIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000044c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44C5 24632 bytes
SHA-256: 8c21fb10a965fb1f492f3e050035335df3900521cae65c6a6a460caab402cbc8
font_01_sfnt_off00007d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D16 18252 bytes
SHA-256: 9451e5fca0303306000edfe7554c8c3ab381970a55708b368469a366b964caf0

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