Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abb38f8a34b215e…

MALICIOUS

PDF

37.1 KB Created: 2021-05-11 16:41:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 431d8f9b6e177794a4327335de34119b SHA-1: 04d61e720096eb6aeeaf6eb201c80cfc354299df SHA-256: 7abb38f8a34b215e05b9e95594847b4e97309c4a8d6528cf341b389e2d82eaf9
170 Risk Score

Malware Insights

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

The PDF file contains a lure for a 'free generator / game hack' and displays a fake CAPTCHA to trick the user into interacting with a malicious link. This link, https://netcdn.xyz/app/431946152/how-to-get-free-robux-gift-cards-game-hack, is identified as a known malicious redirector. The document's structure and content strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-robux-gift-cards-game-hack In 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_off00003203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3203 26192 bytes
SHA-256: a9c9ace6012135c405cea131ff5d5d692ee50c2bc5d437a747a950bdb49f9992
font_01_sfnt_off00006e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F 18804 bytes
SHA-256: db707177e1a0df533614fd289cf2b470ee37edf039339bb568c3977480a042bc