Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42e527c4a4161e9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 09:46:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c69dd48c4b821d0dc7e74090b316a66e SHA-1: 662d1a86ddc1facd0aa527fdf8c842e153cecc5a SHA-256: b42e527c4a4161e9509c97f507e18b4e6092d69def8b01b7ffb74b9eb1365880
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free generators. The primary lure appears to be a 'free spin link in Coin Master game hack'. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. The document's content and structure are consistent with a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spin-link-in-coin-master-game-hack In PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-how-to-get-free-robux-on-laptop_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-free-draw-2-auto-draw_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-one-piece-golden-age-hack_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/how-to-hack-to-get-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/cheat-roblox-pour-ninja-legends_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-play-as-guest-free-unblocked_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/how-hack-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/hack-for-robux-with-edit-this-cookie-2021_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/how-to-be-a-hacker-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-games-that-promise-free-robux_GM431946152.pdfIn PDF document text
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/what-games-give-you-robux_GM431946152.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
font_00_sfnt_off0000318d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318D 22904 bytes
SHA-256: a06902c77c9f6999ac222296b0e3973bb8aae0b09b42a6328669b507cdd73682
font_01_sfnt_off0000650d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 18344 bytes
SHA-256: d3e962bcabbb5ef935488ecc7aa9e5e3fb65918ede879eb88a760949ba3de850

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