Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd226012afbcd5c…

MALICIOUS

PDF

37.4 KB Created: 2021-05-23 22:12:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a672ea0737dcc6d043c023d3b1b6c992 SHA-1: 16bd4539e175c368aa08c0d11bafffc0d4c3f6be SHA-256: 1fd226012afbcd5cc3dbc383bc075246809767791fbd09b615bfa3ffce63e4c2
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 0.9447

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/roblox-hack-generator-game-hack PDF link annotation
    • http://www.gadanie.lv/images/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/blox-rewards_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
font_00_sfnt_off00003382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3382 27708 bytes
SHA-256: b4d7548b27910edc26b6979d38a395ae0d3d537c5dcb3997d2a8988e131ea02c
font_01_sfnt_off00007085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7085 18284 bytes
SHA-256: 25a7dda4fa93a15709e62d61065895c31c9e65ce27a7c8bbaa34224db667a0ef

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