Malicious PDF — malware analysis report

Static analysis result for SHA-256 a294fee81a400595…

MALICIOUS

PDF

46.0 KB Created: 2021-05-14 19:58:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14d7c42c4f8a0c4761a09f70edc7aea3 SHA-1: 65f6dec30319781ca9183cf9d6530fc3cb4e6e17 SHA-256: a294fee81a40059588faa6c1185b4eb0ef6b81dbfaa793f08d7a79e81d4ee696
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 0.9432

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/freespins-coin-master-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-without-offers_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_003_off00004c5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5C 24768 bytes
SHA-256: ca858c0df9aaebefccea75542c4a43a8d4171b89ef3deb4df7f6a330009c4edd
font_01_sfnt_off00008506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8506 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off0000928e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928E 17884 bytes
SHA-256: c31d741d4f965ff4f04c8652eedf0010194718e591e89cbf3157ab9f7afc750f

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