Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf544dcf0355d90…

MALICIOUS

PDF

45.5 KB Created: 2021-05-16 00:51:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e2b14b759d3eaf1bf0f456d31789be29 SHA-1: 05ac25ca25acde205f89d9b10bd133e30525dbf9 SHA-256: 3cf544dcf0355d90f1d237d2414c2c5ce67ad12a341ed932d9d6ee933ca08ad8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a "free generator / game hack" lure. The document body and extracted URLs suggest a scam aimed at tricking users into visiting potentially harmful websites. While no scripts were explicitly extracted, the nature of the links and the lure implies an attempt to lead the user to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/479516143/minecraft-realms-free-game-hack In PDF document text
    • https://www.zagi.hr/files/freerobux-co_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/i-need-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/roblox-gang_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn 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_off000048e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E8 27320 bytes
SHA-256: dab81048670145a963388a9f99427f8a2190e47ac757e3ee7d3378c23860da9d
font_01_sfnt_off0000873c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000090dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DC 17900 bytes
SHA-256: badbc394cd8954733b164be5cc8c6ff402afbb9d7774d644eb4a8191a91f4c18

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