Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2dc0ed1e921c37…

MALICIOUS

PDF

42.4 KB Created: 2021-05-21 13:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d63383b3a22bbf8f51c6df7b782cb0e1 SHA-1: af01b2b60265cde09c9f2a5a9ebe4d0922ca4489 SHA-256: 5f2dc0ed1e921c37c48a70165c337b181bee4712d34b7c0fbaf9f5de9bc857b3
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA 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 malicious score 0.7429

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/free-robux-website-game-hack PDF link annotation
    • http://www.gadanie.lv/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-hack-tool-v1-9-download_GM406889139.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_off000034e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E0 27572 bytes
SHA-256: 65352187c0619fd263f260f81a31772d25949a825a5dcdf9db921c5ab9d4467f
font_01_sfnt_off000076ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00008400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8400 18436 bytes
SHA-256: 681a9996b59f8391b7cc91011c49ef4e68754eb5dc3ad8da1029f3e9c8ab03b4

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