Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db735ff1e1bd511…

MALICIOUS

PDF

33.6 KB Created: 2021-05-21 08:11:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e21e40cfe0c059bf22e0b23e7646daa3 SHA-1: 5349c125b16a6fff0fe922621873a14a0d8de166 SHA-256: 0db735ff1e1bd51152bbdbede4c2a5b5c44c1d817c9347d80d49c0391bcfb509
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' to install Minecraft, directing users to a malicious redirector URL. This indicates a phishing attempt to trick users into visiting malicious sites. While no scripts were extracted, the embedded URL and the nature of the lure strongly suggest a phishing or scamming operation.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-install-minecraft-for-free-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_002_off00002d9d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D9D 24052 bytes
SHA-256: e4071f1f31e17cde188f9cbd41c503af28dd41f5ecc95dcca8a027ee91b12b61
font_01_sfnt_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 17948 bytes
SHA-256: 5e3ba7e4cd3ca4e9461728952bafe8ac7745d23e1bc3d1385ef5be4278fd35be

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