Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f755a88f66b27f…

MALICIOUS

PDF

39.0 KB Created: 2021-05-12 05:05:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 722e9df75f1592a43b9967410cb12923 SHA-1: 28e6431f8fd7bdf79eb9cc849f75b804a3e9b366 SHA-256: c2f755a88f66b27fa32fe8258b112c5609c5f90d228397989f158753876aabb4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for game hacks and links to known malicious redirector infrastructure. The embedded URL, 'https://netcdn.xyz/app/479516143/minecraft-pocket-edition-free-game-hack', is the primary indicator of malicious intent, likely leading to a phishing or malware download site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/minecraft-pocket-edition-free-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
font_00_sfnt_off00003534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3534 25028 bytes
SHA-256: eedae24f64a3ad8cf6aff3380d6bcb765beec68af36c2cc1272c5505ea628aea
font_01_sfnt_off00006cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off0000770a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770A 18208 bytes
SHA-256: 2ed6c6c26b313aca39a14255061e0cb7ebbe0fc3f7500b174c0a7a92c92a7b7b

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