Malicious PDF — malware analysis report

Static analysis result for SHA-256 b606eb3d93062482…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 22:56:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6cb3121ffd191a72da79d94a777d451b SHA-1: 870a6f729de7dc9b463b60c3c7aeb4c1d624a9c4 SHA-256: b606eb3d93062482caa97a9740748c8ae3988758e49ea26e1887abbbe618cad5
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 0.9507

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/pro-free-spins-coin-master-game-hack PDF link annotation
    • http://techmobil.pl/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/daily-free-spins-for-coin-master_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_off00004950.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4950 25304 bytes
SHA-256: 6471dbb7d842c29deec5367b33810bcae1ea4fb827df39cf14afee9e41ec1826
font_01_sfnt_off0000821f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821F 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00008fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA7 18040 bytes
SHA-256: f9cfd09f1f0adcfb05f49f46170915efea321752292d644bf66086fa9d05ce61

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