Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a80c63d32db65f1…

MALICIOUS

PDF

43.5 KB Created: 2021-05-15 00:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ede519376e80c2873ec21b97f52d23d9 SHA-1: d9afe0bec33cf0b7e639300f5f50b917d213e243 SHA-256: 1a80c63d32db65f11d2ceb19dc23989aeb56049eff83fd9ed07e6e30c7d0be23
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 0.9969

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/406889139/free-spins-on-coin-master-iphone-game-hack PDF link annotation
    • http://almacargo.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://almacargo.com/images/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://almacargo.com/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://almacargo.com/images/coin-master-hack-spin-link_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_003_off000048b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B6 27824 bytes
SHA-256: 0b480d95a894fe3fe1d40719c0ca33b392b2f1fb3241d7edf8b18859dc6b4b54
font_01_sfnt_off000088c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C7 18052 bytes
SHA-256: cd0cb577e7d4090b96c5f8ed0188a47ba8a30ae82de00c7511d7ba9195227280

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