Malicious PDF — malware analysis report

Static analysis result for SHA-256 3179872b49f2b054…

MALICIOUS

PDF

12.7 KB Created: 2019-04-30 03:35:07 +01:00 Authoring application: mPDF 5.7
MD5: a1d29aaab599d2f008ec42d718477dfb SHA-1: 463d4e3760e415b613759ea7b47c0b212ca833e4 SHA-256: 3179872b49f2b054ce64b0564e61290f5bf54a82fbcae6f4c025acb528cdc67f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to external PDFs hosted on xiixmcuin.linkpc.net. While the specific content of these linked PDFs is not analyzed, the sheer volume and the nature of the heuristic suggest a link farm intended to distribute malicious content or engage in SEO abuse. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://xiixmcuin.linkpc.net/8206202201209201/The-Unreal-and-the-Real-The-Selected-Short-Stories-of-Ursula-K-Le-Guin-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1200205209207209/Very-Far-Away-from-Anywhere-Else-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1204201205206204/The-Telling-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2204206202209/The-Dispossessed-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/5200203208206201/The-Dispossessed-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/3207203203202209/The-Other-Wind-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2201208200208207/Malafrena-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2206208200200/The-Eye-of-the-Heron-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2206205201200/Lavinia-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2207208205207200/Always-Coming-Home-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/3203203207206/The-Earthsea-Trilogy-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/2207202205209206/The-Lathe-of-Heaven-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1202209208207200/Cheek-by-Jowl-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1208202205209207/Tehanu-Book-Four-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1205205201200/Orsinian-Tales-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/5200202205205209/Five-Complete-Novels-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1201207206202204207/The-Lathe-of-Heaven-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/5204207209205/Fish-Soup-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/4205204206202203/Planet-of-Exile-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/3200201202205203/The-Tombs-of-Atuan-by-Ursula-K-Le-Guin.pdf
    • http://xiixmcuin.linkpc.net/1208202205209207/Tehanu-Book-Fo

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