Malicious PDF — malware analysis report

Static analysis result for SHA-256 1208f619716045db…

MALICIOUS

PDF

29.7 KB Created: 2021-07-22 11:51:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 118f17a5512493eac11721d45e2e4bd8 SHA-1: b60ffb4b6fe588d09ba9038a79598b61906de24a SHA-256: 1208f619716045db267d1c757d374c0a1a209674d3b192468982078d9d233fc4
130 Risk Score

Malware Insights

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

The PDF file contains a lure for a 'free generator / game hack' to obtain Minecraft, directing users to a known malicious redirector URL. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. While no scripts were explicitly extracted, the PDF structure and embedded links point towards a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier clean score 0.0556

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/how-to-get-minecraft-for-free-on-phone-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_off00002317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2317 21900 bytes
SHA-256: 68dabeef3ef1a786468ff91b5f4d6a8c564c4cd2fddabf04018dab48075ce358
font_01_sfnt_off00005333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5333 18192 bytes
SHA-256: 90b6a34edb34d309cd556a6b23817db9766b775643cedc81c4ce7203f03c64d4