Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7eeff1b1f9ebd71…

MALICIOUS

PDF

37.4 KB Created: 2021-07-06 03:51:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 20bd54d31b4a8b080d434c523b3815fd SHA-1: 2a184fd8ab97be1bf2f93e23611b7bbe557580e5 SHA-256: a7eeff1b1f9ebd714ada93dcfa7d1e5753c7062dfec1ca2dd896d2a7aace42d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting game hacks and cheats. The document body and heuristics indicate a lure to download or access these resources, which is a common tactic for distributing malware or leading users to phishing sites. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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/coin-master-hack-without-human-verification-2021-game-hack In PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/ninja-simulator-roblox-cheats-for-xbox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-tool-download-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hacking-games-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/fly-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pet-paradise-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/20210-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/get-free-robux-no-download-no-waiting_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-free-robux-ads_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/cheez-it-cursor-roblox-downloaad-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pokemon-go-free-7-days_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-task_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_off0000394e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x394E 22896 bytes
SHA-256: 425683269af2d97d1fc02bfb15f6ac7dae00f40a42266faeb55585c4f2060d1a
font_01_sfnt_off00006c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 19304 bytes
SHA-256: f8861b3c9aaf8f1d50bee1847069a40ba50e39d84bb43402706f5c77a0ef7414

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