Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b4900cdde1e643…

MALICIOUS

PDF

25.4 KB Created: 2019-05-01 18:31:46 +01:00 Authoring application: mPDF 5.7
MD5: b77c960fc3b6da35a91a4cb759aaafd2 SHA-1: 9fc458d61be424c09f1ff036ccf2027a6bf84e7c SHA-256: 46b4900cdde1e643673d79ca0c1a732150f0e1c919d8f58b2188613b74c500b7
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to distribute malware. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, contains references to these external links, reinforcing the attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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/8091094092092098/Embroidery-and-Lace-Their-Manufacture-and-History-by-Ernest-Lef-bure.pdf
    • http://loaminoo.linkpc.net/8091093099098098/Embroidery-and-lace-their-manufacture-and-history-from-the-remotest-antiquity-to-the-present-day-A-handbook-for-amateurs-collectors-and-general-readers-by-Ernest-Lef-bure.pdf
    • http://loaminoo.linkpc.net/6099097099097094/Old-Lace-a-Handbook-for-Collectors-An-Account-of-the-Different-Styles-of-Lace-Their-History-Characteristics-and-Manufacture-by-Margaret-Jourdain.pdf
    • http://loaminoo.linkpc.net/1091097098098098090/Art-Needlework-for-Decorative-Embroidery-Guide-to-Embroidery-in-Crewels-Silks-Appliqu-Etc-With-Instructions-as-to-Stitches-and-Explanatory-Diagrams-Containing-Also-a-Short-History-of-the-Art-of-Embroidery-by-Eliza-Mary-Ann-Savage.pdf
    • http://loaminoo.linkpc.net/1091097098098096092/Big-Embroidery-20-Crewel-Embroidery-Designs-to-Stitch-with-Wool-by-Nancy-Nicholson.pdf
    • http://loaminoo.linkpc.net/5097090095098098/Getting-started-with-Tambour-Embroidery-Haute-Couture-Embroidery-Series-Book-1-by-Saskia-ter-Welle.pdf
    • http://loaminoo.linkpc.net/1091097098098097098/A-Z-of-Crewel-Embroidery-and-A-Z-of-Ribbon-Embroidery-Flexibound-2-Books-Bundle-Collection-by-Country-Bumpkin-Publications.pdf
    • http://loaminoo.linkpc.net/6099097098099098/The-History-of-English-Secular-Embroidery---Scholar-s-Choice-Edition-by-Margaret-Jourdain.pdf
    • http://loaminoo.linkpc.net/2095090096095098/Steel-and-Lace-The-Complete-Series-Lace-1-4-by-Adriane-Leigh.pdf
    • http://loaminoo.linkpc.net/5092091095098091/Compact-History-of-the-Civil-War-by-R-Ernest-Dupuy.pdf
    • http://loaminoo.linkpc.net/1097091094097094/Whiskey-and-Lace-Lace-2-by-Adriane-Leigh.pdf
    • http://loaminoo.linkpc.net/5098092093094092/A-History-of-Germany-in-the-Middle-Ages-by-Ernest-Flagg-Henderson.pdf
    • http://loaminoo.linkpc.net/2092099094092097/London-Lace-Complete-Series-London-Lace-1-5-by-Catou-Martine.pdf
    • http://loaminoo.linkpc.net/2092090098094094/Behind-Iron-Lace-Iron-Lace-1-by-Mercy-Celeste.pdf
    • http://loaminoo.linkpc.net/1091099092092090094/Practical-LSD-Manufacture-by-Uncle-Fester.pdf
    • http://loaminoo.linkpc.net/9092098098091091/Blue-Nose-Master-The-Memoirs-of-Captain-Ernest-K-Hartling-by-Ernest-K-Hartling.pdf
    • http://loaminoo.linkpc.net/6091099099090091/A-Farewell-to-Arms-The-Complete-Works-of-Ernest-Hemingway-Volume-3-of-21-by-Ernest-Hemingway.pdf
    • http://loaminoo.linkpc.net/8096097095099091/Nordisk-Mytologi-Yggdrasil-Asar-Ragnarok-Bure-Vaner-Fimbulvinter-Meile-Sejd-Volva-Goe-Lista-Over-Gestalter-I-Nordisk-Mytologi-Alver-by-K-lla-Wikipedia.pdf
    • http://loaminoo.linkpc.net/1091099092092091094/Understanding-Disney-The-Manufacture-of-Fantasy-by-Janet-Wasko.pdf
    • http://loaminoo.linkpc.net/1091099092093091096/Advanced-Techniques-Of-Clandestine-Psychedelic-And-Amphetamine-Manufacture-Second-Edition-by-Uncle-Fester.pdf

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