Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd42b0abf4c5167c…

MALICIOUS

PDF

32.2 KB Created: 2021-07-21 06:11:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df3284004a1c5a398340a9f25f3d8578 SHA-1: c9ea7fde3f68b946905f4a85305345bde4435870 SHA-256: bd42b0abf4c5167c60882589ab1ce0921f048cd4ecc69ccd3f7f061f9b025fe7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary focus on luring users with 'free generator' or 'game hack' themes. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/can-you-make-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://www.mppcivils.com/wp-content/uploads/fsqm-files/coin-master-free-cards_GM406889139.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_off00002b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B42 21920 bytes
SHA-256: 5b593b7479ba4c25154f1db80f13e63506c76cb5871705bdef952e1ed0dc1b54
font_01_sfnt_off00005bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB2 18296 bytes
SHA-256: 7b2a5025a6b2eafbb08597cb19c0e2dd24287b9ce61b32a45f1f6eb7f3859dea