Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6112d7c0b52abb…

MALICIOUS

PDF

47.1 KB Created: 2021-05-10 11:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1d76d4ab7f0de31137d2c7a2504740d1 SHA-1: eeb3053c69a7a3a461e6ddf1cc0f6d1b359d74ca SHA-256: da6112d7c0b52abb3e5c27c620eb0b8e03ed77beb3effbb15d511b5f7af75f2a
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a lure for game hacks and links to known malicious redirector infrastructure. The embedded URL, 'https://netcdn.xyz/app/479516143/free-minecraft-skin-packs-game-hack', is identified as malicious. The document body and metadata suggest it is designed to trick users into clicking the malicious link, likely leading to further malware download or exploitation.

Machine Learning

  • Nyx PDF Classifier clean score 0.0123

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/479516143/free-minecraft-skin-packs-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003795.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3795 25128 bytes
SHA-256: d3a7d261968a5af4f4bbd07466e661706475ff58c692f3b707a2f4f423a9d0b9
font_01_sfnt_off00007041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 7996 bytes
SHA-256: da70a0fbdf24bf798f75a7eb2fab391b717f208e6c1e6d39bbb3063091c249cd
font_02_sfnt_off000089a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A2 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000982e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982E 17892 bytes
SHA-256: 3d88f62d7f103248f07683485ae665a8ae7a7912bf87b287aa517b4ed8ad8cc7

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