Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c36c54605d9797a…

MALICIOUS

PDF

45.6 KB Created: 2021-05-22 11:38:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 40215202d9b0eb6f783ae253f978f2c4 SHA-1: 934573e09d1075ea2926122aa01080f845a9f385 SHA-256: 4c36c54605d9797a76ec0a96f52bc912504430191660df2eeb1d2d0ad5d4a7d6
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 0.7826

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/how-to-get-free-robux-without-doing-anything-game-hack PDF link annotation
    • http://vedrachemicals.ro/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3406 28956 bytes
SHA-256: eab69d1fcd6b7beca715de036a179d56abb0aeaee7a1231c48c25331f6abe6d4
font_01_sfnt_off00007448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7448 3964 bytes
SHA-256: f6b9a386ee4e0aff622a98b2230905da71eab0ca98398cb52018fda3528d3e2a
font_02_sfnt_off000081a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A5 3396 bytes
SHA-256: e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee
font_03_sfnt_off00008d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D97 19400 bytes
SHA-256: 843e7c6de0628ecb74dfde19cdfb212261a67f0d6d996bc16e2547f6c0bce3d3

Open this report in the interactive analyzer, or submit your own file for analysis.