Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c1f0fb7f32d7ef…

MALICIOUS

PDF

33.7 KB Created: 2021-07-10 00:51:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0a458fc29dfb00e2616883229f32c322 SHA-1: 37cbc3d3e2b8eda920e3aed3eaf7d40424240add SHA-256: 46c1f0fb7f32d7efc707097a26e4d867e0ec77e96d0ff497c63c7fc7b7f999fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that lead to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The document body and heuristics indicate a lure designed to entice users to click these links, which likely serve as a first stage for further malicious activity. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a phishing or malware distribution attempt.

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/479516143/minecraft-115-2-hacks-game-hack In PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/roblox-2021-download-free_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/oprewards-login_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-hack-project-pokemon-roblox_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-buy-headless-head-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/animations-give-free-robux_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-coding-tshirt-roblox_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-new_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_off00003098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3098 21940 bytes
SHA-256: 3e25ac007506ab648c3a725a12ef279f29c4643698f37b7d579e800e9b95a296
font_01_sfnt_off000060e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E5 18392 bytes
SHA-256: a5e8b6de27b32cfbe788615902c7a1c8c983a8dcd969aa9e6686e527b322186c

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