Malicious PDF — malware analysis report

Static analysis result for SHA-256 8984d41cc859c59f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 20:18:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0e28c74c8fd1a51aad25b579bf09422d SHA-1: 56df815d2d2a7cb0405e4f2558195eaadb1a0428 SHA-256: 8984d41cc859c59fd5a13b55137e5ad727dc37dd1128f0df3ef741d72f3f0744
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious URLs. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to potentially harmful content.

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/free-script-executor-roblox-game-hack In PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/dll-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-800-robux-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-enter-a-cheats-code-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/dll-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-hack-add_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-jailbreak-how-to-get-a-free-bugatti_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_off00002e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5D 22220 bytes
SHA-256: 5e367560c100a42ab0ca043bffeb9e74239293fd41ebc685fcc2c0b7c6e100be
font_01_sfnt_off00005f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F86 19192 bytes
SHA-256: 5ec67ff0a1d76549777ff7b00fb55ee5a5dc35183321f73836e9d98427fb59d3

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