Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dbd72991f9369c…

MALICIOUS

PDF

36.0 KB Created: 2021-05-19 22:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d9f4164e04ebd9a63979ac57bedf5c88 SHA-1: cd3512e26fbd30ad67b921c37cb5cdcec9941de5 SHA-256: 30dbd72991f9369c98a4d8ba392e33071d57aab53b0128eaaaa27c20387b9955
130 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Pubg 30 Uc Free' and embeds a link to a known malicious redirector. This link, 'https://netcdn.xyz/app/1330123889/pubg-30-uc-free-game-hack', is designed to lead users to potentially harmful content. The presence of a download button lure further supports the malicious intent of directing users to external resources.

Machine Learning

  • Nyx PDF Classifier clean score 0.0282

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/1330123889/pubg-30-uc-free-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_off0000306d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x306D 25312 bytes
SHA-256: 2bb3b02fcb53cf0fc866da9ec8d55a746564b71e12c59cbc766c9e4f68c55cfb
font_01_sfnt_off00006af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 18408 bytes
SHA-256: 5c14e2d4ee6a307e77bfbe8c3beae751c75631e49fc2c1afec1b10c96b679f6b

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