Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71b2f4a57b1d2cc…

MALICIOUS

PDF

28.0 KB Created: 2021-07-20 13:38:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a755feab8020dd5fd624cfd01cdc564e SHA-1: 43431ed2d735fa2bb404e0a1593f4db44ecdd3e0 SHA-256: c71b2f4a57b1d2cc39bc3c2bf205d105fd9fdbf696d1c834c72496bc8be72626
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to malicious redirectors, specifically advertising 'free Minecraft server hosting' and 'game hacks'. One of the embedded URLs, http://netcdn.tw/app/479516143/best-free-minecraft-server-hosting-game-hack, is identified as a malicious redirector. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further indicating a phishing or scam attempt designed to trick users into downloading potentially malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0461

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/best-free-minecraft-server-hosting-game-hack In PDF document text
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-likes-on-tiktok_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_off00001db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB5 21324 bytes
SHA-256: 6eeb9a410b93b00502692453a09b0416b43062f92b6ad3fda16c614718f2ee9c
font_01_sfnt_off00004ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA4 18328 bytes
SHA-256: 0b2d28431e5234c57104fb234e5f183f246f5a4819408a3d571d7ab08b18c1e5

Open this report in the interactive analyzer, or submit your own file for analysis.