Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d373b864ae8cae8…

MALICIOUS

PDF

48.1 KB Created: 2021-06-11 05:01:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 05da9c65f0f83801e5405793561c35ef SHA-1: 083f65c7e7cbbdff8c876d5d8c0e701e33d20d96 SHA-256: 1d373b864ae8cae824689b063254b89917d554a6b65d2943fbbcc79386502f73
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 0.9871

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.tw/app/431946152/descargar-hack-robux-game-hack PDF link annotation
    • https://schneider-und-berger.de/images/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/pokemon-go-free-meltan-box_GM1094591345.pdfIn PDF document text
    • https://schneider-und-berger.de/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/roblox-hack-2021-ipad_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/mc-hacks_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/pokemon-go-free-spoofer-ios_GM1094591345.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C6 31224 bytes
SHA-256: 51872491784bf304bec57938999e5adcbcd7ff80e095c73107841c70ddb5b6ac
font_01_sfnt_off00009832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9832 18704 bytes
SHA-256: b19edb9e4e0b187a8af15088ddb740c672f5794130709e56b60dd5ba93d1ff17

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