Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f0045e548b1295…

MALICIOUS

PDF

40.1 KB Created: 2021-05-13 21:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7aa3d1dfe4a0ca7c6fd8624e9d3a7176 SHA-1: 60bb5b4c5607fc2fe6393f9176a4b4876658e3d8 SHA-256: 02f0045e548b1295d573d4c1f452994dcf980cdfd943b2ba30b591793515c110
170 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a lure for a "free generator / game hack" to trick users into clicking a malicious link. This link leads to a known malicious redirector infrastructure, indicating a phishing or scam attempt. The document's content and embedded URL strongly suggest a social engineering tactic to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/roblox-gift-card-online-free-game-hack In 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_003_off0000345f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x345F 26428 bytes
SHA-256: d2878f5379ae9e0fa4b659e9d0176fc6862826f73debd73600227c2eed64dc00
font_01_sfnt_off000070b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00007a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A64 18572 bytes
SHA-256: df9893eb1f0d0b90ef1012123e626362df07f41b7e954edba7018aa352f9b9fa

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