Malicious PDF — malware analysis report

Static analysis result for SHA-256 25dc95dfb62c2e6d…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 17:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: a08fc7fd7b33bd4838cf409ea0f4701b SHA-1: 312e26208627f68c44850bcf47a3c084f6429711 SHA-256: 25dc95dfb62c2e6d07d16c80d2e9e0863a1d831991563fea67c4e5c6fa1dd40a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware or phishing attempts. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.co/app/431946152/free-list-of-roblox-accounts-game-hack In PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/comment-trouver-un-bon-hack-pour-roblox-blox-piece_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-robux-no-inspection_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.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_off0000349a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x349A 22536 bytes
SHA-256: 7f9c728c37e0f71d4c36f4916f322f31e892ba63c65b829dc388efb8e367879c
font_01_sfnt_off000066c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 19012 bytes
SHA-256: 94e1cccd6085cedb510bbbacbec0ce3101756c450951ebec959b4c7079729db0

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