Malicious PDF — malware analysis report

Static analysis result for SHA-256 595b0f7220740350…

MALICIOUS

PDF

39.1 KB Created: 2021-05-21 03:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 877f83bbfe36b17b5a2c2d27678cbf5a SHA-1: 49f07e5c74a2b3d0f2183fe813cd549f5e6e5108 SHA-256: 595b0f7220740350db9556f58d6af0f09f6a122a8fa207c9ac213d24efc4e363
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 0.8060

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-bedrock-edition-hacks-game-hack PDF link annotation
    • https://scraperite.com/images/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/dominus-roblox-free_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_off000034ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34EA 25048 bytes
SHA-256: e7dd8e3894a78f895147adba1167788297939e6d585dc5a2a7893343d21a1bdb
font_01_sfnt_off00006dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00007785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7785 18268 bytes
SHA-256: ab11a404ecd1e05d7423e813f114c97ddc1b622607c5cfcfecdb5803810a7c8b

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