Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b06bdf4c71115f…

MALICIOUS

PDF

33.2 KB Created: 2021-07-20 08:10:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbfccd803f9b4882bdadf3bfe11471d8 SHA-1: 37e805f120bc1fefaa7d27bd3fb9346e464cad0c SHA-256: f8b06bdf4c71115f2d681aa2fe9a32fe79b3b8cb407291deff51b4df3d073905
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.tw/app/479516143/free-minecraft-accounts-reddit-game-hack. The document body text and heuristics indicate a lure for free game items or accounts, which is a common tactic for phishing or malware distribution. The presence of embedded URLs and a call-to-action button further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/free-minecraft-accounts-reddit-game-hack In PDF document text
    • http://plastic-surgery.pl/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://plastic-surgery.pl/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://plastic-surgery.pl/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-tiktok-likes-and-followers_GM835599320.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_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 22484 bytes
SHA-256: 15591827c40d81151d12bc8d2786a0eb2ddcc962e37607ddac0043ecef86f238
font_01_sfnt_off000060cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 18024 bytes
SHA-256: 8cc2f99dc924a15d52918b37ec4a77595277c9fc296e6ac0964170e61a15a16b

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