Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ae6441bbbc6bad…

MALICIOUS

PDF

40.8 KB Created: 2021-05-22 05:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 459f4d21a9ada2bf5380c51562f7a514 SHA-1: 6acc7a8d417195c5acd78e030c752c0f1ba0bb05 SHA-256: 08ae6441bbbc6badf44e12ab9c358faeaa54cd805345a71e7dc92b6fec0c7662
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 0.7508

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-coins-for-coin-master-game-hack PDF link annotation
    • http://inextpresident.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/how-do-u-get-free-robux-2021_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_002_off0000386d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x386D 26140 bytes
SHA-256: b6f56c322d3c496fd6444185ac793180978628b7c674dca3017db2778b5e691b
font_01_sfnt_off000074d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00007fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD9 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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