Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b79927308e5de63…

MALICIOUS

PDF

28.3 KB Created: 2021-07-29 17:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4938dc6159f57ab942b56136060fc90 SHA-1: 19e1846103e2b44217868fcf37d5ea3e06675f15 SHA-256: 0b79927308e5de6325b2c301b19386a0db52e23c3ed1764923eed3d65bc60dc8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack' for Minecraft. The embedded URL, http://netcdn.tw/app/479516143/minecraft-free-download-android-game-hack, is known to lead to malicious infrastructure. The document body and PDF facts confirm the presence of this lure, suggesting an attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0329

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 http://netcdn.tw/app/479516143/minecraft-free-download-android-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
font_00_sfnt_off00001eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAE 21360 bytes
SHA-256: 7d7f174ae472cfa3d01f3747225b28866e1fefe7cfaa65cd25f64392981e83a0
font_01_sfnt_off00004ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CED 18292 bytes
SHA-256: 9d9b0ee832c8ed03a3e8d039feca9f5c484872876758be0788389d8bcd5131f0