Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6bdcebdf9baceb2…

MALICIOUS

PDF

36.0 KB Created: 2021-05-20 19:19:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2ed9f7b9b1c2467ec9862ba42ce67a25 SHA-1: 1e8421afe0dec02437158fedad50035f916ce20c SHA-256: a6bdcebdf9baceb21ca56745e4ec3d7741f375d3f85e2fca721fcaa8a5a86789
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure to trick users into clicking a link. The link, 'https://netcdn.xyz/app/479516143/minecraft-free-minecoins-game-hack', is designed to redirect users to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures reinforces the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-minecoins-game-hack PDF link annotation
    • http://elearning.mysadam.info/__statics/gudangsoal/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/master-coin-free_GM406889139.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-free_GM406889139.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_002_off000034ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BA 24976 bytes
SHA-256: c76e0fb7eb6d16597737a83aedf54750f3bde4c048b777cebb7c98fe095a5499
font_01_sfnt_off00006d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D54 17712 bytes
SHA-256: 84922fa40070066ef4f1a201e85f9de45244526ee00faa1dc92053ed0f889265

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