Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2ff63c0531b296…

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 15:36:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 54ad5fa65e93b84691f0fcf3d6e9dd7f SHA-1: 65dc3f6522b30c3230e323a0a3b85c4f24f57c09 SHA-256: 8b2ff63c0531b296e0952e3dbf319ef4756d6a70b76846a5c7dd41ac80f10e43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, disguised as a game hack generator. The document body and heuristics indicate a lure for free game currency or hacks, which is a common social engineering tactic. The presence of multiple links to similar lures suggests a phishing or scam campaign.

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/how-to-hack-coin-master-with-lucky-patcher-game-hack In PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-free-money-on-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/rbxdemon_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-money-in-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.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_off00003486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3486 22760 bytes
SHA-256: c9d08d8f85085ec091d5fde10f7ebdbbe727c895d4b32e84e797e3bbbec1f20d
font_01_sfnt_off0000675a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 19004 bytes
SHA-256: 72744f55c65b03f5a6aaa8126460cee87f351ffc0638b0811cb3164743004500

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