Malicious PDF — malware analysis report

Static analysis result for SHA-256 91b463f230ef04a4…

MALICIOUS

PDF

36.9 KB Created: 2021-05-10 11:20:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 72bb71b4ff8c4daa2bad8d9ec6bde090 SHA-1: f62997cabf0573dabab8a3daa0458e602d914618 SHA-256: 91b463f230ef04a4bfffba71d39f8b78797c9b2fa2882398818f8f10ed62edc2
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically targeting users with a lure for game hacks and free downloads. The embedded URL, 'https://netcdn.xyz/app/479516143/minecraft-free-download-apk-softonic-game-hack', is identified as malicious infrastructure. The document body also contains text and a call-to-action button, reinforcing the deceptive nature of the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-free-download-apk-softonic-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_off000035ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35BA 25016 bytes
SHA-256: 7bd82160a89b85f76afa54e41e9142ca0e710b79fd2ae2c9cb0275ce1d2e4cb4
font_01_sfnt_off00006df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF9 18636 bytes
SHA-256: 8d59af17281decbf927120d542a9fc6958c86d48fe17fe9ad1336eeca3d2c8a1

Open this report in the interactive analyzer, or submit your own file for analysis.