Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf2399818c291d3…

MALICIOUS

PDF

13.8 KB Created: 2019-05-07 09:24:37 +01:00 Authoring application: mPDF 5.7
MD5: 214ede72a641291869e55a0716cc5cbf SHA-1: c2dd361aee50a100814d7d6823984d0172115961 SHA-256: ecf2399818c291d37b10850d6a01f7d61790594003e9370d40557ca9787aab31
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs suggest a delivery mechanism for further payloads.

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/4093092090095097/Lightning-87th-Precinct-37-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/3095096094095097/The-Con-Man-87th-Precinct-4-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/2096096091092093/Poison-87th-Precinct-39-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/8090097093094/Lullaby-87th-Precinct-41-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/4099096092097092/The-Heckler-87th-Precinct-12-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/8094090093094098/Jigsaw-87th-Precinct-24-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/1094093098092095/Hark-87th-Precinct-54-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/3094094093097093/The-Big-Bad-City-87th-Precinct-49-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/8092095097094/Long-Time-No-See-87th-Precinct-32-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/5090094099092094/Killer-s-Payoff-87th-Precinct-6-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/3096092096092096/Hail-Hail-the-Gang-s-All-Here-87th-Precinct-25-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/3095094091094094/Lady-Lady-I-Did-It-87th-Precinct-14-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/2091091098093091/Nine-Month-Protector-The-Precinct-Vice-Squad-2-The-Precinct-6-by-Julie-Miller.pdf
    • http://loaminoo.linkpc.net/2094094094099098/Protecting-the-Pregnant-Witness-The-Precinct-SWAT-3-The-Precinct-15-by-Julie-Miller.pdf
    • http://loaminoo.linkpc.net/2090092095091099/Man-with-the-Muscle-The-Precinct-SWAT-1-The-Precinct-13-by-Julie-Miller.pdf
    • http://loaminoo.linkpc.net/5090094093095097/Red-Lightning-Thunder-and-Lightning-2-by-John-Varley.pdf
    • http://loaminoo.linkpc.net/4094094099091097/Transgressions-Novellas-2-3-amp-5-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/7099096091092093/A-Study-in-Scarlet-by-Ed-McBain.pdf
    • http://loaminoo.linkpc.net/3090092094099094/McCade-s-Way-by-Mara-McBain.pdf
    • http://loaminoo.linkpc.net/2093090091098097/McCade-s-Way-by-Mara-McBain.pdf
    • http://loaminoo.linkpc.net/2091091098093091/Nin

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