Malicious PDF — malware analysis report

Static analysis result for SHA-256 db066b0ae39cfce2…

MALICIOUS

PDF

37.5 KB Created: 2021-05-11 01:35:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d8c038deb0b6803977c18b3b41f1d25b SHA-1: 0d19d239c8f5cfdc0bdf44614ed5d24cc7e3475b SHA-256: db066b0ae39cfce272023947d8c45574d83c6a4a5e9b23932a470a0af94e8101
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious. It uses a callback-phone (TOAD) lure. 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 clean score 0.0334

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox-gift-card-for-free-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3586 25592 bytes
SHA-256: 6a87809ba14a9247510c0227c760a6c8893ff8c35eb9532974b4b58ebeeb6363
font_01_sfnt_off0000707f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707F 18572 bytes
SHA-256: 60e7b0d1b0e81cbc9f742acc768a1a32489c2ca7a8c90f8b1ba1abaa767594e4