Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f95058f41318b39…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 13:38:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 300054d06dab2b4e435853b395ca734e SHA-1: 89c13541114cdb4cc73081bf24bff32db49942c4 SHA-256: 5f95058f41318b39f9de104d69bf57b50ac22582e882efd9bbaf7c79f9b1309a
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 0.9632

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/coin-master-pc-hack-game-hack PDF link annotation
    • http://inextpresident.com/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-home_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-coin-master-cheats_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_off0000497b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497B 25136 bytes
SHA-256: 4714a57f27381e27053ef5a4c1d1ea7fb1cf92137a0ea98f3e9ccb6e2a95a8d4
font_01_sfnt_off000083b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B4 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E92 17868 bytes
SHA-256: 2afdedecde820afe22901ca35ab1de7d9bd06462c55bbc4b8ddd703c94e78653

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