Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e36dede16d46068…

MALICIOUS

PDF

36.0 KB Created: 2021-05-12 19:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0196910359ddd2346418e8395e39664d SHA-1: ef0c2e8d11f3129c282b3143e79d5ace5a2a8db7 SHA-256: 3e36dede16d4606843f31a4ade7723cfea7540a87b6f5f9aa17ef91723192a9b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free generator' or 'game hack'. The document body text and heuristic firings confirm this lure. The primary IOC is the malicious URL used for redirection, which is likely part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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-com-no-verification-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_off00002ff9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF9 24904 bytes
SHA-256: 6c862086fe411d0ca99fc9dc036e531660fe40cd7f2351e284c1e95c67c29fc4
font_01_sfnt_off00006972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6972 18860 bytes
SHA-256: fd9d837b898dacd9f5ea22edfb03c528ade61200bf0a18b53858ad02fb024854

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