Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d31e16782a7e3a…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 12:09:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b905f5cf7c5f832d87bb47b41a5b65a0 SHA-1: e3a223fbba492ec2e33c808bf8f65c4c1ef69f1d SHA-256: 59d31e16782a7e3a319d03950cf05c00fb5ca2ac328e2cb3938a77279b6e7c43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating a malicious redirector lure, specifically advertising a 'free generator / game hack'. The primary malicious URL identified is https://netcdn.xyz/app/479516143/make-your-own-minecraft-server-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to redirect users to potentially harmful content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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.xyz/app/479516143/make-your-own-minecraft-server-free-game-hack In PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/is-tiktok-free-to-use_GM835599320.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://discord.ggIn 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_002_off0000338e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x338E 24784 bytes
SHA-256: 08cbbee77f45c0f09c62c2f8780d36a51588c389156050102314c541bfca25b6
font_01_sfnt_off00006c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C94 18460 bytes
SHA-256: 721af029458f2979280337e7e3abf665ad270da07a2ce86ac9fe8418a2624103

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