Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad481529ccaccdc5…

MALICIOUS

PDF

46.2 KB Created: 2021-05-22 21:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7025bdf0baca55a9338d8eaff4e7fc10 SHA-1: bea7a824b63612cd766cff8b73a0df18f71d8e49 SHA-256: ad481529ccaccdc588ea35c1b4918b82ee6caa7a17abf7a6fbc34fff84486ae5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks or generators. The document body explicitly mentions 'Minecraft Mobile Free' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's output strongly indicate malicious intent, likely to lead the user to a site that downloads further malware or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7777

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/minecraft-mobile-free-game-hack In PDF document text
    • http://schmittmusic.de/images/real-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000355b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x355B 24440 bytes
SHA-256: d0129411bd7d61d6c6ecd4da7ed71512d4730733c84f7d202733e81c94922d20
font_01_sfnt_off00006ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA3 7972 bytes
SHA-256: eaa1b4224a6962b9f6f86352b99971468550f59a685feb8f2aa8fc0bcc1dc5ce
font_02_sfnt_off000085f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F0 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000947c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947C 17944 bytes
SHA-256: ce10a2b2c496b69fcf76f31cd4916c063e1dd9befde4055646c3ea28f41e8e8e

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