Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c2677c08099668…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 15:38:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 54816369149a61d8d81436d030c0a835 SHA-1: 645e654a7af41f66ea575bd0025fc954b8ab6fb1 SHA-256: f4c2677c080996685c4e8a3378ace8c89a07d17be878b79d0f6814ab5a838a76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Minecraft Realm Codes' to entice users to click on a link. The link redirects to a known malicious infrastructure, indicating a likely attempt to deliver a second-stage payload or conduct phishing. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/free-minecraft-realm-codes-game-hack In PDF document text
    • http://rgadventure.com/userfiles/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/robux-website_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-codes_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AA 28784 bytes
SHA-256: bf5317b73ba1398e957538a1a80f1fd232feaf8da77b2fca3a7e7825ebd4e98e
font_01_sfnt_off00008ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD0 18216 bytes
SHA-256: 112831491273e470c6e89805da9a532ffdffe59a8001213273075a33f4492bfc

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