Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ebdee15bc73f73…

MALICIOUS

PDF

36.2 KB Created: 2021-05-25 07:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4c8c66f2523d324efbb3f1df03638243 SHA-1: 62920ba4a4a35e68408f747cfee452190c6b3ce1 SHA-256: a0ebdee15bc73f73cdbf7374276389580aab5e972806b846a83c5362d1fb4d84
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 0.9492

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/431946152/claim-free-robux-game-hack PDF link annotation
    • https://www.anagoria.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/pokemon-go-free-no-download_GM1094591345.pdfIn PDF document text
    • https://www.anagoria.com/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FA 24480 bytes
SHA-256: 8de8b7b46413ac332d2f0074fe3af56fbd46dd6a985c238728e452adca75991c
font_01_sfnt_off00006b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B40 18696 bytes
SHA-256: 5cf9f9319346d61d0cee7eea738a99b5b91b4687cc89c43f6f5509699f250cff

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