Malicious PDF — malware analysis report

Static analysis result for SHA-256 9250257bef32b838…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 22:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0787f18cb8aae3a4d301a3217ff647d5 SHA-1: 16532b69c062933e8824120440db7a7c36b90e35 SHA-256: 9250257bef32b838851554adab8681629170ff0516827c5525be7526566cadb2
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/free-coin-master-cheats-game-hack PDF link annotation
    • https://dirigentigiustizia.it/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/100-free-spins-coin-master-link_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_off00004a35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A35 24664 bytes
SHA-256: 05a4d6cd914ddff634b304ed53382d605ada49adf84c5d20e7cc76ef105812cf
font_01_sfnt_off0000824a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824A 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 17876 bytes
SHA-256: c4ff47951e1088ebfa6fee4158ec4a4a8e96ec6fafbade11010d5ee59fd5f115