Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72fdc15299b5eb9…

MALICIOUS

PDF

36.8 KB Created: 2021-05-10 23:13:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 23c8262507fb18cd5ec3b258ce9b71ac SHA-1: 9b99c4e31b77a7463c39ae0328bcb03b291df105 SHA-256: d72fdc15299b5eb932cfebc860757f9121a0c2ddffed9a2a77f4d80ace49f00d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a 'game hack' and embeds a link to a known malicious redirector. The document body also contains text related to downloading Minecraft and a call-to-action phrase, reinforcing the phishing attempt. The embedded link is the primary indicator of malicious intent, likely leading to a further stage of compromise.

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-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
stream_003_off0000366e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x366E 25156 bytes
SHA-256: 097e83d681fb978ffdf890b77c7ccbf8f341de70a4a8f4904a2cb95d24588bfc
font_01_sfnt_off00006e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E99 18292 bytes
SHA-256: 9d9b0ee832c8ed03a3e8d039feca9f5c484872876758be0788389d8bcd5131f0

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