Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a42bd4033a756d2…

MALICIOUS

PDF

38.6 KB Created: 2021-05-20 16:46:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 586de4e6c4a0d3dff85ca1dddb494060 SHA-1: 736026ccaba93058280d9798fbae230165cb7743 SHA-256: 5a42bd4033a756d2243234a6ab00bcdde3a0a25e72cebd2fcd313cb665cf63e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Minecraft Pocket Edition Hack" which redirects to a malicious URL. The embedded link and document body text strongly suggest a social engineering tactic to trick users into visiting a site that likely hosts further malware or exploits. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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 https://netcdn.xyz/app/479516143/minecraft-pocket-edition-hack-game-hack PDF link annotation
    • http://mountain.mn/uploads/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://mountain.mn/uploads/files/free-robux-hacker-us_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_off0000336e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336E 25120 bytes
SHA-256: e7b6221967acc885559644baaf64eb085b741a78121ca5d1750dfbd712c03c3e
font_01_sfnt_off00006bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDB 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000075c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C5 18208 bytes
SHA-256: 8dadf0fd28e98d89ce6fd9d7956b131e74aedd91cd69dedc14cee10df05e92c0