Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9fb3cf5f1bd167…

MALICIOUS

PDF

42.5 KB Created: 2021-05-15 01:07:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8ebd70400692add8efeca521b9c74f85 SHA-1: c8c42848dde2051bb3271b3b5102dac1b73fee84 SHA-256: 5e9fb3cf5f1bd167f436e889a7ea85163c53c4f2811c12659141b59730dfa2de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors, disguised as "game hacks" or "free spins" lures. The primary function appears to be directing users to potentially harmful content or malware distribution sites. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent.

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/406889139/can-lucky-patcher-hack-coin-master-game-hack In PDF document text
    • http://www.homesweethome.pl/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-hack-2021_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
stream_003_off000049ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EF 25428 bytes
SHA-256: f0e95a62d1dad768f184e0d21c86b4380ec3c173cfa0aa0f010dd1ab163e9f42
font_01_sfnt_off000083e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 18356 bytes
SHA-256: 9698df987dae4d8314b25fe4ddcb6f3f03442cdb106168c50b117c5038fa6506

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