Malicious PDF — malware analysis report

Static analysis result for SHA-256 017bb06f9050df8d…

MALICIOUS

PDF

47.7 KB Created: 2021-06-07 02:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c9f53b5dc6dbe2099912f3e1fb7e33da SHA-1: e782ee3aebb6a270fd5ca5c03b7a49dac0e78c3e SHA-256: 017bb06f9050df8d21e40b85c18bf311cdc4113edd2798e95e70f842b22dfb45
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a lure for malicious content, specifically a 'free generator / game hack'. It embeds a URL that points to known malicious redirector infrastructure. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to trick users into visiting a malicious site, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0399

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.tw/app/431946152/free-robux-generator-download-2021-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
stream_004_off00003cd8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CD8 40344 bytes
SHA-256: 54d2a97e828395e166aeffc590f61254a1c974aa69beb2be18e82ed1bd584c57
font_01_sfnt_off00009635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9635 19328 bytes
SHA-256: ae8ef929e243e95770ca11aad70b6b8e8876a973adaccc5ec8216cac7fc0c1ab

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