Malicious PDF — malware analysis report

Static analysis result for SHA-256 416f83d868bc384b…

MALICIOUS

PDF

44.6 KB Created: 2021-05-11 01:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1c8185ecf214f55e28e6081e19a9dfd3 SHA-1: 35e66fee17cffc5a4687e07b62beed77e42fa33e SHA-256: 416f83d868bc384b515b63c3df57c4124ee9314b2ff52a3b9fcc7aa73102d596
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/479516143/mcpe-hack-client-game-hack PDF link annotation
    • http://dennemaat.nl/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://dennemaat.nl/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://dennemaat.nl/images/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://dennemaat.nl/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/get-robux_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dennemaat.nl/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://dennemaat.nl/images/huskybuscom-free-robux_GM431946152.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_off0000486a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486A 25252 bytes
SHA-256: 78f28f4f9eb277e0549eb39084d33150cb7ab5e239ac6dcaf953a20eab080583
font_01_sfnt_off00008233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00008ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA6 17988 bytes
SHA-256: 87e99989ab28f7107c4229d46f6cf183976b270a9adc21032b385c5b4f15e52f

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