Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1e11a212be417c…

MALICIOUS

PDF

35.5 KB Created: 2021-05-14 22:05:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c6635b57ab2ac0e0f3435a6b3e2a0da0 SHA-1: 9845de4fc188e6c731ceeb4af75e42b327420123 SHA-256: dc1e11a212be417c7c073e684e6ff42888f00bd8c1896d698ccfffea429880af
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically disguised as a lure for free Minecraft skins and game hacks. The embedded URL points to known malicious infrastructure, indicating an attempt to redirect the user to a potentially harmful site. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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-minecraft-skins-xbox-one-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_off000031b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B7 24376 bytes
SHA-256: 20808fcc9bfb0dad4783ecd436cfb8d9ffe0c90746d3d59f92e12538394cbc64
font_01_sfnt_off000068a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A6 18476 bytes
SHA-256: 232ed5a85e3eb7365037632e89adcc3de647f06670efb3a8119b1009e47d113e

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