Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aba7b9ae5071b21…

MALICIOUS

PDF

38.8 KB Created: 2021-05-16 13:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 48e6b623b8dfd63c5f504ad4d33cf010 SHA-1: 26237f15fcf6459ba3d05cf4782cb110bcd03588 SHA-256: 1aba7b9ae5071b21a5852f25ddae2c7bbfeb50183bf63a8ad768ff2a4664926a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "free Robux generator" which links to known malicious redirector infrastructure. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/free-robux-that-actually-works-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_003_off0000353c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353C 28208 bytes
SHA-256: e786daa52e73516ee63a9112fa1ee927607b24a4163be6c7716016a5f5cf2bf4
font_01_sfnt_off000073f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 19136 bytes
SHA-256: e9e8736bed1826902485352f20294e96b644ee357cd6186db79dc9b33c578c67

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