Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f05b7bcdd8fce0…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 12:56:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7cf66fb2439bc5cc6cd5f54bb6f67594 SHA-1: 4b38dbafb73468a0b038cba9bfcaf40d3b607a1b SHA-256: f1f05b7bcdd8fce0a7bfb31afcfec99d4db7970192d748327f03a656cf791fc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links designed to lure users into clicking on them by promising game hacks and free in-game items. The primary redirector URL, http://netcdn.tw/app/431946152/is-roblox-free-on-ps4-game-hack, is associated with malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites, likely for further malware delivery or phishing. No scripts were extracted from this sample.

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/431946152/is-roblox-free-on-ps4-game-hack In PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-cheat-level-200_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/hacks-de-chat-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-btools-in-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-no-human-verification-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/blox-land-where-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/pokemon-go-free-or-not_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE2 22456 bytes
SHA-256: 1902dbf1384f13b10d2d7f4a09a8c402e6dc0280b5e5657861dae3bf9b0fa366
font_01_sfnt_off00006140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 18868 bytes
SHA-256: 824c90c9f10edf8913ce2cc5e6fccfca0491a4cd932fa6552270a04d257ad04e

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