Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9db1a1081ae8fd8…

MALICIOUS

PDF

38.2 KB Created: 2021-05-24 03:43:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 84dfeb3a81796248318be2222ecbe816 SHA-1: 30efac5a7bae80e14fff352366603ddf8a61b685 SHA-256: b9db1a1081ae8fd8e49fc679228dd9f5519433d0f8b38d1418aa27e5df6ecdf7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL related to 'is-minecraft-free-game-hack'. The document body also contains similar lures and multiple URLs pointing to sites offering game-related cheats or currency. This suggests the primary goal is to trick users into visiting potentially malicious sites, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/is-minecraft-free-game-hack PDF link annotation
    • http://engelum.com/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://engelum.com/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://engelum.com/images/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://engelum.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://engelum.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.youtIn 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_off00003529.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3529 28680 bytes
SHA-256: 56feea24c622e208fa783591efc5b183a1100e5889ed65f3fc8b2dffcb26457a
font_01_sfnt_off00007684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 17568 bytes
SHA-256: 44c16732000c578f47393ad484896351af84166fbd5efffd5af9fb6697599acb

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