Malicious PDF — malware analysis report

Static analysis result for SHA-256 16998308dcaa3051…

MALICIOUS

PDF

39.7 KB Created: 2021-05-21 21:21:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0df0f9704aef2b7f07a099de59cc1152 SHA-1: d8a33e17de1022a5f39a40fb5e108a9b05b6242d SHA-256: 16998308dcaa30519bf2b0f58f031d148affc3e881cbe70dc2749daf8041d165
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to a known malicious domain, masquerading as a game hack generator. The document body explicitly mentions 'how to get Minecraft Realms for free' and includes a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, reinforcing the lure. The presence of multiple redirector links and the ML classifier firing indicate a high likelihood of malicious intent, likely to lead users to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/how-to-get-minecraft-realms-for-free-game-hack In PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003436.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3436 26056 bytes
SHA-256: 4240dc971d78e6fec3e80d3042d39a97127ce7eaeefdea64d28b18a0c252b46c
font_01_sfnt_off0000700f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700F 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off000079f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 18208 bytes
SHA-256: e7f5766237207d24130a790e1d2d61f15d85f871af5599da5b7787abafcff996

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