Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa061abb9066f663…

MALICIOUS

PDF

36.8 KB Created: 2021-05-20 14:23:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 00dfa87f1685d82da61f57d6e5799b12 SHA-1: 676f54b76afec93082002c7a0b4ffb4f50872c85 SHA-256: fa061abb9066f6634c97212298522849a5dc0b025473a58573cd0099c2b5047a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to malicious redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. It also employs a fake CAPTCHA lure to trick users into interacting with these links. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-roblox-money-game-hack In PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/hack-version-coin-master-apk_GM406889139.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_off0000354a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x354A 25056 bytes
SHA-256: 3b42f46eedbe6041ae613f40924e2dfa1d0e134dcd02ee9199b63f2fc819fc40
font_01_sfnt_off00006d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D68 18592 bytes
SHA-256: b73f1f0d33754a6311a400e0f9b7fa1bed8423beec91854f27c9eb8add8b4fcc

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