Malicious PDF — malware analysis report

Static analysis result for SHA-256 35885b9d03e544e2…

MALICIOUS

PDF

44.6 KB Created: 2021-06-09 07:32:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aada6789f1197d494d2712abfd35dc67 SHA-1: b7467fe1ec5a3ac6667e014a9a5966765fcb640c SHA-256: 35885b9d03e544e2fbdd5e1616f6f250e864ef5627a65a50ce28bfb9a6f7669c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and document body text that explicitly mention 'Roblox Hack 2021' and provide links to download related files. The ML classifier also flagged this PDF as malicious. The presence of embedded URIs and the document's content strongly suggest a phishing attempt to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-hack-2021-june-game-hack In PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/pokemon-go-fake-gps_GM1094591345.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/flying-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-roblox-template-t-shirt_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-for-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-support_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/hack-shrek-roblox_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-roblox-accounts-with-builders-club-and-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/robloxbux-net-roblox-hack_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_004_off00005127.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5127 24844 bytes
SHA-256: 5fc2964f65438d7e3e2a3df5a567f5495465e175da30542947e2ec1cbfbe175b
font_01_sfnt_off000089da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DA 18888 bytes
SHA-256: d37567fe24ee915cc9e5bf1845eb927a3db6f4a00c8f539a62dd03b2bde67b12

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