Malicious PDF — malware analysis report

Static analysis result for SHA-256 a886096abdec9dfe…

MALICIOUS

PDF

47.0 KB Created: 2021-05-23 02:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ca728e08457b5895d25b408d10fa4627 SHA-1: 9c806f62778ec37cb54961de74cae3790c991b26 SHA-256: a886096abdec9dfed3f2ed4849c60326f810049bf33e2f821b0a8f7a93e85757
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 0.7663

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-online-free-no-download-game-hack PDF link annotation
    • http://kulturlandschaften.eu/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BA 25464 bytes
SHA-256: c9d1ecc2e7249c9c36f48a5e8a799c6e17c5a2600b8f0af0acdfdade9ccc3ed2
font_01_sfnt_off00006e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9B 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off000087c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C5 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off00009652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9652 18292 bytes
SHA-256: b061ada675b676782f5f9f5eef39691e0700ad1698d2269622484eea1080e831

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