Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa768eec587b1c…

MALICIOUS

PDF

38.2 KB Created: 2021-05-25 11:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f7332de208356bf4410b3529e1a38282 SHA-1: eee0cc5fff5f880869361051a177ee1b5e9b010e SHA-256: a4fa768eec587b1c142d9a4dfc4b37c588c8a360e31438409f0e1f5629cf9429
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 game hack lure. The document body explicitly mentions 'I Got Hacked On Roblox' and provides a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', directing users to a suspicious URL. This suggests the PDF is designed to trick users into visiting a potentially malicious site or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/431946152/i-got-hacked-on-roblox-game-hack PDF link annotation
    • http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.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
font_00_sfnt_off00003194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3194 24328 bytes
SHA-256: 44dca141767be1127085a336974f47fe3fc765039e1b10754da4324d88e1327e
font_01_sfnt_off00006937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6937 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off000072f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 18460 bytes
SHA-256: a8a49c36ef4b2531a5f792820ad3efe99a39c3e474aae1f279e7d577006455a1

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