Malicious PDF — malware analysis report

Static analysis result for SHA-256 828b7a6df21697ac…

MALICIOUS

PDF

37.2 KB Created: 2021-05-12 11:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ea70b0fdc506cfa5e544b9e3863eedb9 SHA-1: b70d4102489162b24cb291b610703ccde53f80fc SHA-256: 828b7a6df21697ac08435a38f85cb2608d204fdef58b09c08a87a9d2b9052910
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to hacking Minecraft servers, directing users to a malicious URL. This URL is identified as a known malicious redirector, suggesting the document's primary purpose is to facilitate the download of a secondary malicious payload. No scripts were extracted, but the presence of malicious links and the lure strongly indicate a phishing or social engineering attack.

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/how-to-hack-a-minecraft-server-and-make-yourself-op-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_off000035b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35B0 24784 bytes
SHA-256: 5a6959a999dc255b0c18b4a272f481d52bdfbd0df5e84e1e81236c2d94d9d999
font_01_sfnt_off00006e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E53 18884 bytes
SHA-256: c6c75348c8512da505ae943a266b7446b2e14ebdee3fe9748eb8d749779a3ee4

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