Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a0631307ae6e19f…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 05:57:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8ec5506633ffc11559a893807ffe2199 SHA-1: d1b8108152bf613341ad9c1c9643ac9cd830d583 SHA-256: 5a0631307ae6e19f45593f87ca38de834d17796f6513c3055702144fc37c84c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free game hacks' and generators. The document body, though heavily obfuscated, contains references to a URL that aligns with the heuristic findings. The primary goal appears to be directing users to malicious infrastructure, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-creative-mode-free-game-hack In PDF document text
    • http://livsgnistans.se/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/free-coin-master-link-2021_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
stream_003_off00004c3d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C3D 24564 bytes
SHA-256: f4b505ab128b814a7adda6ff539543cf29ab6d172226eb469401782e29181bf2
font_01_sfnt_off000084b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B5 18000 bytes
SHA-256: f6a8cbfed7e544a7ed90cd1995fc8c45102f25219f8fae40911eda120a1a4630

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