Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f423ff3d03149ed…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 04:22:54 +01:00 Authoring application: mPDF 5.7
MD5: c3c1ee733f99df73e79fe16424789230 SHA-1: d21dd14052633e1294f5a11d0450c7b85736f715 SHA-256: 8f423ff3d03149ed7a12dcfb66e39cd50cfd8a5e83f8e6a7cc527134514dae44
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the heuristic 'PDF_SEO_LINK_FARM' indicates a malicious intent to manipulate search engine results or distribute content through these links. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/7090093092099098/Clifford-Arbor-The-Seduction-of-Raven-Peters-Clifford-Arbor-1-by-Sam-Crescent.pdf
    • http://loaminoo.linkpc.net/7090093092099094/Clifford-s-Bedtime-Clifford-y-la-hora-de-dormir-Bilingual-by-Norman-Bridwell.pdf
    • http://loaminoo.linkpc.net/9098093092098093/In-The-Arbor-by-Nancy-Kuhl.pdf
    • http://loaminoo.linkpc.net/1096094091093097/Good-Night-Mr-James-And-Other-Stories-The-Complete-Short-Fiction-of-Clifford-D-Simak-Book-8-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/4094095099092093/Dusty-Zebra-And-Other-Stories-The-Complete-Short-Fiction-of-Clifford-D-Simak-Book-11-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/9099099097092099/Ann-Arbor-Review-of-Books-1-3-29-March-2013-by-E-J-Feddes.pdf
    • http://loaminoo.linkpc.net/8090096097098090/Atlantico-Finisterrae-Arbor-Mater-by-Abel-Neves.pdf
    • http://loaminoo.linkpc.net/1094098094091093/Just-Tell-Me-When-We-re-Dead-by-Eth-Clifford.pdf
    • http://loaminoo.linkpc.net/9092090099092/The-Book-by-M-Clifford.pdf
    • http://loaminoo.linkpc.net/1098090097090097/Help-I-m-a-Prisoner-in-the-Library-by-Eth-Clifford.pdf
    • http://loaminoo.linkpc.net/2097099091094090/The-Hoax-by-Clifford-Irving.pdf
    • http://loaminoo.linkpc.net/8098090094095091/Hannibal-by-Clifford-W-Mills.pdf
    • http://loaminoo.linkpc.net/1093099096091098/Time-and-Again-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/3092090095093099/Time-And-Again-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/2096099093090/Lamentation-Jay-Porter-1-by-Joe-Clifford.pdf
    • http://loaminoo.linkpc.net/4090090094090096/Ring-Around-the-Sun-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/3099090096094/City-by-Clifford-D-Simak.pdf
    • http://loaminoo.linkpc.net/2091090098095091/Everybody-Rise-by-Stephanie-Clifford.pdf
    • http://loaminoo.linkpc.net/4093095097094092/Spanking-New-by-Clifford-Henderson.pdf
    • http://loaminoo.linkpc.net/4091096091092095/Give-Up-the-Dead-Jay-Porter-3-by-Joe-Clifford.pdf

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