Malicious PDF — malware analysis report

Static analysis result for SHA-256 2488aa287a0855fb…

MALICIOUS

PDF

45.1 KB Created: 2021-05-15 06:13:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4f04a6b00b813322bfde1ee3373556d4 SHA-1: 0016d6573b6e59af63d63bd717843095dc229237 SHA-256: 2488aa287a0855fb47654a4023fd46c6fe0fd4851007c32f73729b0dbdc529b7
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 0.9621

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/406889139/2021-free-spins-coin-master-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/haktuts-coin-master-hack_GM406889139.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_off00004a9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9E 24752 bytes
SHA-256: f73e116489545172990b1be2949b3890cf33cf2de2e9ba30f7d9995c7c2499fa
font_01_sfnt_off000083bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BC 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00008da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA1 18288 bytes
SHA-256: d5a46c40ddaffffdec7b194e78d64597afed9f46b5e12e45e50a00bb771aa4a6

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