Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6054b59f63af68f…

MALICIOUS

PDF

21.8 KB Created: 2019-04-28 09:28:35 +01:00 Authoring application: mPDF 5.7
MD5: 9e4e59f0b6bdc725aa33936b0d4ad3c7 SHA-1: 718ec9ea0775dc62d742d9a0736a884a2e941e59 SHA-256: a6054b59f63af68f90e01f881d45233dfa4cc0059e9e116ca3b33c6f99f6ea2b
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO poisoning or to redirect users to malicious content. The ML_NYX_PDF_MALICIOUS classifier also strongly indicates maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3093090096090092/The-City-Not-Long-After-by-Pat-Murphy.pdf
    • http://loaminoo.linkpc.net/3093098096092093/City-of-Darkness-and-Light-Molly-Murphy-13-by-Rhys-Bowen.pdf
    • http://loaminoo.linkpc.net/3092092093096091/In-Dublin-s-Fair-City-Molly-Murphy-Mysteries-6-by-Rhys-Bowen.pdf
    • http://loaminoo.linkpc.net/1096092099094094/Federal-City-s-Secret-Marie-Bartek-and-the-SIPS-Team-3-by-Robin-Murphy.pdf
    • http://loaminoo.linkpc.net/4098093094096091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-The-Mortal-Instruments-1-5-by-Cassandra-Clare.pdf
    • http://loaminoo.linkpc.net/3097096090091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen-Angels-City-of-Lost-Souls-The-Mortal-Instruments-1-5-by-Cassandra-Clare.pdf
    • http://loaminoo.linkpc.net/8096094091095098/City-Long-Suffering-First-Movement-by-Tim-Murr.pdf
    • http://loaminoo.linkpc.net/9099090099098090/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1958-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Long-Leaf-Hill-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-by-Hill-Directory-Company.pdf
    • http://loaminoo.linkpc.net/1091098094097097090/Ruhe-in-Fetzen-Ein-Fall-f-r-Mrs-Murphy-Ein-Mrs--Murphy-Krimi-2-by-Rita-Mae-Brown.pdf
    • http://loaminoo.linkpc.net/1091098094098097092/Die-Katze-l-sst-das-Mausen-nicht-Ein-Fall-f-r-Mrs-Murphy-Ein-Mrs--Murphy-Krimi-10-by-Rita-Mae-Brown.pdf
    • http://loaminoo.linkpc.net/8097096094092094/Die-Katze-l-sst-das-Mausen-nicht-Maus-im-Aus-Ein-Fall-f-r-Mrs-Murphy-Catch-As-Cat-Can-Tail-Of-The-Tip-Off-Mrs-Murphy-10-11-by-Rita-Mae-Brown.pdf
    • http://loaminoo.linkpc.net/1091095098097096092/Murphy-und-das-Grauen-D-monenj-ger-Murphy-by-Earl-Warren.pdf
    • http://loaminoo.linkpc.net/1091095098096098098/Murphy-und-die-Templer-D-monenj-ger-Murphy-by-Ann-Murdoch.pdf
    • http://loaminoo.linkpc.net/2097092097095092/Murphy-s-Law-Molly-Murphy-1-by-Rhys-Bowen.pdf
    • http://loaminoo.linkpc.net/4098098093099097/Murphy-s-Law-Molly-Murphy-1-by-Rhys-Bowen.pdf
    • http://loaminoo.linkpc.net/1090099099094093095/Mick-Murphy-s-Law-A-Mick-Murphy-Key-West-Mystery-by-Michael-Haskins.pdf
    • http://loaminoo.linkpc.net/5099096095092/A-Long-Long-Time-Ago-and-Essentially-True-by-Brigid-Pasulka.pdf
    • http://loaminoo.linkpc.net/3092094090090092/The-Long-Utopia-The-Long-Earth-4-by-Terry-Pratchett.pdf
    • http://loaminoo.linkpc.net/5094096097099/Exodus-from-the-Long-Sun-The-Book-of-the-Long-Sun-4-by-Gene-Wolfe.pdf
    • http://loaminoo.linkpc.net/1090092095090097/Litany-of-the-Long-Sun-The-Book-of-the-Long-Sun-1-2-by-Gene-Wolfe.pdf
    • http://loaminoo.linkpc.net/3097096090091/City-of-Bones-City-of-Ashes-City-of-Glass-City-of-Fallen

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