Malicious PDF — malware analysis report

Static analysis result for SHA-256 5514782cf6501e61…

MALICIOUS

PDF

19.6 KB Created: 2019-04-30 04:58:58 +01:00 Authoring application: mPDF 5.7 First seen: 2021-07-10
MD5: 22776a73b71ce00fb8c4d1f0505f3106 SHA-1: fa7038fcfa1bcb01dd1b18bf885002cecbbf2c0a SHA-256: 5514782cf6501e6165d674799b4264e39e31b83f7b33858d19f4ff3e68c240e0
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. While the document body is heavily obfuscated, the presence of numerous URLs and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted, but the overall structure points to a link-farming or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://muicuiu.dumb1.com/7a07a09a06a09/Blubber-by-Judy-Blume.pdf In PDF document text
    • http://muicuiu.dumb1.com/4a08a09a01a06a00/Latino-Muslims-Our-Journeys-to-Islam-by-Juan-Galvan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a06a05a03a07/Island-Bauwerk-in-Island-Geographie-Island-Islander-Islandische-Geschichte-Islandische-Organisation-Kultur-Island-Medien-by-Quelle-Wikipedia.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a06a06a00a04/Geographie-Island-Vestmannaeyjar-Geographie-Islands-Vulkane-in-Island-Island-Plume-Sprengisandur-Islandisches-Hochland-by-Source-Wikipedia.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a02a03a06a02a09/De-Meester-by-Guillermo-del-Toro.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a01a04a04a03a03/Citizen-Su-rez-by-Guillermo-Verdecchia.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a03a04a01a02a07/E-Angel-Di-San-Kristof-by-Guillermo-E-Rosario.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a07a07a01a08a04/The-Strain-Panini-Suspense-1-by-Guillermo-del-Toro.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a02a09a01a00/The-Fall-The-Strain-Trilogy-2-by-Guillermo-del-Toro.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a04a04a05a00a04/Smashing-Node-Js-JavaScript-Everywhere-by-Guillermo-Rauch.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a06a06a04a01/The-Fall-The-Strain-Trilogy-2-by-Guillermo-del-Toro.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a02a00a04a01/Norodom-Sihanouk-y-el-Hermano-N-mero-Zero-La-tragedia-de-Kampuchea-Democr-tica-by-Guillermo-Garcia.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a08a01a08a00/Independent-Travellers-Greek-Island-Hopping-2005-The-Island-Hopper-s-Bible-by-Frewin-Poffley.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a08a01a03a06/Independent-Travellers-Greek-Island-Hopping-2006-The-Island-Hopper-s-Bible-by-Frewin-Poffley.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a08a07a05a03/My-Island-Portraits-of-Maine-Island-Children-by-Patrisha-McLean.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a08a04a04a07/Island-Colonization-The-Origin-and-Development-of-Island-Communities-by-Ian-Thornton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a09a01a07/An-Island-Out-of-Time-A-Memoir-of-Smith-Island-in-the-Chesapeake-by-Tom-Horton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a01a08a07/On-the-Island-On-the-Island-1-by-Tracey-Garvis-Graves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a01a04a01a06a05/Island-Doctor-Island-Medics-1-by-Sue-Brown.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a03a04a02a07/On-the-Island-On-the-Island-1-by-Tracey-Garvis-Graves.pdfIn PDF document text

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