Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cd4b8f5dcf4d4eb…

MALICIOUS

PDF

40.8 KB Created: 2021-05-15 13:00:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: be12f690316e668fd051e701cb36ec90 SHA-1: f10542c50ff48e3c7b572b029e43f87cc9d2e642 SHA-256: 5cd4b8f5dcf4d4eb4b9d3ea6ea49260aa9a3a0fe0cae3c5244c3cd1940b4389c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically promoting a 'free generator / game hack' for Roblox. The document body text and heuristic firings confirm the intent to lure users to the provided URL. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/how-to-get-free-robux-on-roblox-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_off0000345a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x345A 26216 bytes
SHA-256: 642182a28c2c5462e103ed1e19fefc52e45f19dac98f86fe14228db6e6e0bfca
font_01_sfnt_off00007105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7105 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAC 18356 bytes
SHA-256: 07f7f5fe088ebb6a81b9aca0d3b7acb37488304f642f9e675d153fcc87cea6c5

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