Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fdd36233a89c3d…

MALICIOUS

PDF

39.1 KB Created: 2021-05-25 10:35:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 93aeb7cb6f97be994a58b6e284c51a09 SHA-1: 197209cb63eed0bb0991dc001d7a3538ac1ca50e SHA-256: d4fdd36233a89c3d0d1066600e64cbd26f4b04372b8a6c8c518a3937263bfa01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically pointing to a 'free generator / game hack' lure. The document body includes phrases like 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the social engineering aspect. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack aimed at users seeking free in-game items or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/free-modded-minecraft-server-game-hack In PDF document text
    • http://www.imwd.it/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003385.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3385 25444 bytes
SHA-256: c172116565cca5ad0437cbc56a188037d4a4ed9bbb23bbeba43020870bcfc5a1
font_01_sfnt_off00006e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00007826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7826 18000 bytes
SHA-256: 088756902f929cbb0d1c0fa5d7f6f3d7dd891fd3cb3329064cb278e0751f8302

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