Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c7d117a5ddba64…

MALICIOUS

PDF

41.8 KB Created: 2021-04-22 21:39:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc7f3e779e6e0e7b2f300512bebd890d SHA-1: 69b66328ed77b4191d0a2774ca36e7c2f54ed72e SHA-256: d2c7d117a5ddba64a943df79daa4c34f83fabd2efb2850d0533e73b1f47da397
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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://netsecure.pro/app/431946152/no-free-robux-text-game-hack PDF link annotation
    • http://apcupschennai.com/images/roblox-account-password-hacked.pdfIn PDF document text
    • http://apcupschennai.com/images/free-robux-giveaway-live-2021.pdfIn PDF document text
    • http://apcupschennai.com/images/roblox-hack-tool-robux-and-tix-download.pdfIn PDF document text
    • http://apcupschennai.com/images/how-do-you-get-free-robux-2021.pdfIn PDF document text
    • http://apcupschennai.com/images/free-robux-youtube-hack.pdfIn PDF document text
    • http://apcupschennai.com/images/exploiteur-de-hack-roblox-lumber-tycoon-2.pdfIn PDF document text
    • http://apcupschennai.com/images/roblox-treelands-hack.pdfIn PDF document text
    • http://apcupschennai.com/images/free-item-with-card-purchase-roblox.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-stuff-in-roblox-2021.pdfIn PDF document text
    • http://apcupschennai.com/images/free-dino-hat-roblox.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
stream_003_off0000434f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x434F 27924 bytes
SHA-256: 51a90cddf56eda89d5000275e1fb62b51e4742fd9771006659e0c72fac373bc8
font_01_sfnt_off00008250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8250 18120 bytes
SHA-256: 999cd30d5532bc07fc7923d61ce1aa09b920ecc83f37ab4ae040d449d60c4b46

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