Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d0ffc27e2aa183…

MALICIOUS

PDF

13.2 KB Created: 2019-04-30 02:13:52 +01:00 Authoring application: mPDF 5.7
MD5: ab12b44dcdd32f62a1fa64d75abf12cc SHA-1: ecff37f01e14bd597b3a0a65fc2dd2fd583057bc SHA-256: d5d0ffc27e2aa1831cbc83485b55293544875c747cf452832f0bcfde220c4d17
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded URLs, identified as a link farm. While the specific URLs extracted are currently marked as benign, the heuristic 'PDF_SEO_LINK_FARM' indicates a pattern commonly used for SEO manipulation or to distribute malicious links. The ML classifier also flagged the document as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/6099092090098/Ashes-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/1090096097098091/Hannah-Daughters-of-the-Sea-1-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/2093098097095099/True-North-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/3092094090097091/Broken-Song-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/5098099097093099/Der-Clan-der-W-lfe-4-Eisk-nig-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/6090091094092091/Les-Gardiens-de-Ga-Hoole---tome-1-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/3094092094098093/Watch-Wolf-Wolves-of-the-Beyond-3-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/2094091098096099/Double-Trouble-Squared-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4096096099095/Shadow-Wolf-Wolves-of-the-Beyond-2-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4091098093096/The-War-of-the-Ember-Guardians-of-Ga-Hoole-15-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4091098098092/The-Hatchling-Guardians-of-Ga-Hoole-7-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/3099091099091/The-Shattering-Guardians-of-Ga-Hoole-5-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4097098090092/The-First-Collier-Guardians-of-Ga-Hoole-9-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/1094093096092092/The-Man-Who-Made-Time-Travel-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4097094096099/Exile-Guardians-of-Ga-Hoole-14-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4097098093099/To-Be-a-King-Guardians-of-Ga-Hoole-11-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/6090091094094090/Les-Gardiens-de-Ga-Hoole---tome-2-02-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/1090090099095093096/Die-Legende-der-W-chter-15-Die-Entscheidung-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/2093096098093090/Christmas-After-All-The-Diary-of-Minnie-Swift-by-Kathryn-Lasky.pdf
    • http://loaminoo.linkpc.net/4095092093098098/Unicorns-Get-Real-Camp-Princess-2-by-Kathryn-Lasky.pdf

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