Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f1cddc5a7bd44b…

MALICIOUS

PDF

40.2 KB Created: 2021-05-15 17:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bcf05402b537076edf2006494bfc4d2b SHA-1: de6231001a77a8698b91db401cbafa6bf68a0da5 SHA-256: 07f1cddc5a7bd44b734bb07cfcc5e5314b1f186d77c6b77f265bdbcd8de5cc9a
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded links that redirect to a known malicious domain, masquerading as a 'Free Robux Hack'. The document body and heuristics indicate a lure to trick users into clicking these links, likely to present a fake CAPTCHA or verification prompt. This suggests an attempt to exploit user interest in game-related cheats to deliver a malicious payload or engage in further social engineering.

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/free-robux-hack-us-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_off000033ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AD 27292 bytes
SHA-256: 9343d969c031668a3ea755d3e61a3f88a7dc75c1ccc79b097c99f1d236df20c0
font_01_sfnt_off000070d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D0 2880 bytes
SHA-256: 1765cf12a902813b41ff360b72f374602893607c9d160794e9633e0f1866ac22
font_02_sfnt_off00007aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAD 18600 bytes
SHA-256: be32b0f906764c1f2317decc7ac5a24a5975e1ace61028a3a9703984df87bb8b

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