Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b9954968bd160c…

MALICIOUS

PDF

36.0 KB Created: 2021-05-22 01:37:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5048ab04983d298ab506249470c06fb SHA-1: ccf95800a6819ea7dc6475126953955f88e50f20 SHA-256: 84b9954968bd160cea91e7912f53f2ead590494da8330593a23742b162d650bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game-related content, such as 'free Robux' or 'game hacks'. One critical heuristic identified a malicious redirector link, and the document body explicitly contains a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The presence of embedded URLs and the nature of the lures suggest an attempt to trick users into visiting malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • 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.
  • 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/is-it-possible-to-get-free-robux-game-hack In PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/tiktok-free-folowers-twitter_GM835599320.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-hack-apk-download-for-android_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_off000032af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32AF 24408 bytes
SHA-256: ec8ef3a09fbe9b91d4303dbbc203ae62f52ba90aaf18846bcdf76c08ae042ce4
font_01_sfnt_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 18464 bytes
SHA-256: 524b785793646940a6547919a11f6df6f4967036cf63710b5a4934c88ca16ae7

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