Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35fc404299869e3…

MALICIOUS

PDF

44.8 KB Created: 2021-05-12 14:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa76d836ea9bfd3a194b174c164c5c8a SHA-1: d52dd46be83e72c5eaa3b7820186705a530db51d SHA-256: f35fc404299869e36aa52eb4bce6d2dd52e1e1cbd8b54734d3a3077c17732b47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free game hacks' and in-game currency. The ML classifier also flagged this PDF as malicious. The primary lure appears to be related to popular games like Minecraft and Roblox, aiming to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-java-edition-code-free-game-hack In PDF document text
    • https://www.colditex.com/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-images_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-but_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://www.colditex.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.colditex.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.colditex.com/images/coin-master-facebook-page_GM406889139.pdfIn 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_off000048e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E5 25488 bytes
SHA-256: ba4f8d1fc6ed9e8c53e5a924f259c0515e4e8409203430cfd3dbcfc1fa5e988e
font_01_sfnt_off00008345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8345 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF6 18164 bytes
SHA-256: f60a0ad92d00317e2c15f806bb6b4e732b7ddb4bf4afc6afb4b51f1f749874bc

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