Malicious PDF — malware analysis report

Static analysis result for SHA-256 115ad058dfeb48e7…

MALICIOUS

PDF

32.3 KB Created: 2021-05-21 23:47:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: fc5614b2640358336d6ee23b151037e0 SHA-1: 3584815a8e9ce5480c94860a841f7eb7581b3dcf SHA-256: 115ad058dfeb48e7fce22ec0495d8084717ff788d5403cea51f33fb2014b16fc
130 Risk Score

Malware Insights

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

The PDF document contains a malicious link disguised as a lure for free generator or game hacks. This link points to known malicious redirector infrastructure, indicating an attempt to trick the user into downloading or executing a secondary payload. The document's structure and embedded content strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0622

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/835599320/free-tiktok-likes-no-survey-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_off00002987.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2987 23304 bytes
SHA-256: afb3004e894fb4e502b1f30078d300dfa0f40f128e3e3f5bcae14329ff9068b9
font_01_sfnt_off00005e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3F 17892 bytes
SHA-256: 070bbf181fa5f5f9f6e7cc39461a8fafc014c6f37f15ae67e02d5fc4d998fce6

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