Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a5ead3f43d3d48…

MALICIOUS

PDF

40.9 KB Created: 2021-05-12 03:11:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d26fdac56c01c75f60747329e4a55607 SHA-1: 03144d542174f5bd62bfdb9e5df489a418366307 SHA-256: 68a5ead3f43d3d48cd82dbcf79c01ddfb7aec7036f42fb5ab8380a5ebf50df3a
92 Risk Score

Malware Insights

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

The PDF contains a lure for a 'free Minecraft skin packs game hack' which redirects to a malicious URL. This URL is also flagged as a brand-impersonation credential phishing lure, impersonating Amazon. The PDF structure and embedded content suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or to download further malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/free-minecraft-skin-packs-game-hack.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-minecraft-skin-packs-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000332d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332D 24636 bytes
SHA-256: f0f3768833a30744e499be26f88edf75ba9795369e44a0b34c0d99a7572f1209
font_01_sfnt_off00006ac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC3 3084 bytes
SHA-256: eeadcb18adcfe57e07f5655a001ed91230d3e27a0eb02d3d0a65cc7828d94f40
font_02_sfnt_off00007552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7552 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00007f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F63 17892 bytes
SHA-256: 3d88f62d7f103248f07683485ae665a8ae7a7912bf87b287aa517b4ed8ad8cc7

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