Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e54564ac0ccfd68…

MALICIOUS

PDF

37.7 KB Created: 2021-05-25 09:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c3287f6b380644c5e967ccc375a8f506 SHA-1: b14309b66d7c3cb99adf4af16bc1f6abf51bc742 SHA-256: 7e54564ac0ccfd680ea36c98caa6e1874d44b7e9ff9d0d864f031d80308d6988
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links and a call-to-action button that lure users towards a 'free generator / game hack'. These links direct to a known malicious redirector infrastructure, indicating a phishing or scam attempt. The document body text and heuristics confirm the lure and the malicious nature of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier clean score 0.0076

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/best-minecraft-hacks-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_002_off000030c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30C1 25068 bytes
SHA-256: 900d6ee6186eb7b30f3e085f3af3fb842ec0c80ea43fe026e06b69e423f27f02
font_01_sfnt_off00006930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6930 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off00007370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7370 17952 bytes
SHA-256: 6dfee1982b58ab3489cc821793519200b658269375d8b02cd788103d93863fb8

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