Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aeee16e53c9ebcc…

MALICIOUS

PDF

14.3 KB Created: 2019-04-30 02:16:12 +01:00 Authoring application: mPDF 5.7
MD5: 9f6be22123c12b5302f9fdea6ba5d5ce SHA-1: cc9bd5a2c4d33ad8da5134c86f509c151ccd0a70 SHA-256: 4aeee16e53c9ebccbe514c43cae4a683d6cba4044e182b742021c7cddaa1510c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, likely to drive traffic or distribute further content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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://loaminoo.linkpc.net/2096096096093094/Close-Encounters-of-the-Furred-Kind-by-Tom-Cox.pdf
    • http://loaminoo.linkpc.net/3094097090095095/Close-Encounters-of-the-Girl-Kind-Geekhood-1-by-Andy-Robb.pdf
    • http://loaminoo.linkpc.net/1092098092096/Close-Encounters-by-Terry-Lawrence.pdf
    • http://loaminoo.linkpc.net/2094093090097093/Close-Encounters-Alien-Affairs-1-by-Katherine-Allred.pdf
    • http://loaminoo.linkpc.net/3090098093098097/The-Kiss-An-Anthology-of-Love-and-Other-Close-Encounters-by-C-A-Newsome.pdf
    • http://loaminoo.linkpc.net/6099097090090090/Tanah-Tujuh-Close-Encounters-with-the-Temuan-Mythos-by-Antares.pdf
    • http://loaminoo.linkpc.net/3092092096095091/Encounters-of-the-Alien-Kind-by-Harlan-Finchley.pdf
    • http://loaminoo.linkpc.net/2094093094094094/In-the-Realm-of-Hungry-Ghosts-Close-Encounters-with-Addiction-by-Gabor-Mat-.pdf
    • http://loaminoo.linkpc.net/1091098093093092099/Encounters-with-Fire-Encounters-with-People-by-Shiho-Kanzaki.pdf
    • http://loaminoo.linkpc.net/1099092094092091/A-Kind-of-Truth-A-Kind-of-Stories-1-by-Lane-Hayes.pdf
    • http://loaminoo.linkpc.net/1092099093095090/Don-t-Close-Your-Eyes-Don-t-Close-Your-Eyes-1-by-Lynessa-James.pdf
    • http://loaminoo.linkpc.net/2090096097096096/Right-Kind-of-Mistake-Right-Kind-of-Mistake-1-by-Rebecca-Thomas.pdf
    • http://loaminoo.linkpc.net/3091093099096093/First-Encounters-by-Charming-Man.pdf
    • http://loaminoo.linkpc.net/1090096099094099/Brightest-Kind-of-Darkness-Brightest-Kind-of-Darkness-1-by-P-T-Michelle.pdf
    • http://loaminoo.linkpc.net/1090099095093097/Brightest-Kind-of-Darkness-Brightest-Kind-of-Darkness-1-by-P-T-Michelle.pdf
    • http://loaminoo.linkpc.net/5091095098098090/Chance-Encounters-by-A-D-Hope.pdf
    • http://loaminoo.linkpc.net/4091097097098098/Four-Encounters-by-Olaf-Stapledon.pdf
    • http://loaminoo.linkpc.net/2091099095097097/Encounters-by-Jason-Wallace.pdf
    • http://loaminoo.linkpc.net/2098096091098098/Reaching-Higher-Encounters-2-by-Ann-Somerville.pdf
    • http://loaminoo.linkpc.net/4096098091093098/Bound-to-Fall-Encounters-3-by-Ann-Somerville.pdf
    • http://loaminoo.linkpc.net/1092099093095090/Don-t-Close-Your-Eyes-Don-t-Close-Your-Eyes-1-by-Lyness

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