Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbf9d703c88dbf5…

MALICIOUS

PDF

78.8 KB Created: 2020-03-15 09:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 96f877912b18f50325fb1ce5f51669e5 SHA-1: d400ef8ba40255c79505e15dc20c7062d3b12085 SHA-256: fbbf9d703c88dbf5beacd0eba897ff545ab8727ff36283f6ded246430e59b59e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains obfuscated text and references to a driver update, likely a lure to encourage users to click the embedded links. These links lead to various domains, many of which appear to be part of a link farm, suggesting a potential SEO poisoning or content hosting scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dylanwyke.com/uploads/1/3/0/6/130620694/130620694.html#amd+a9-+9410+radeon+r5+driver
    • http://myrtle-beach-speeding-ticket-lawyer.com/uploads/1/3/0/6/130639978/pabavagegolefenoru.pdf
    • http://securitysportswear.com/uploads/1/3/1/0/131070705/2560580.pdf
    • http://webmail.doraslodge.com/uploads/1/3/0/7/130775062/vefegasifep-wabinumuvivem-kekuxo.pdf
    • http://farmingnola.com/uploads/1/3/0/7/130738924/f4f728730.pdf
    • http://northjerseydirectmail.com/uploads/1/3/0/2/130288710/loruverefozaruvef.pdf
    • http://www.cypish.org/uploads/1/3/0/7/130739000/f4228722296856.pdf
    • http://silvertonnaz.com/uploads/1/3/0/4/130479435/3537282.pdf
    • http://dbjones-author.com/uploads/1/3/0/6/130640214/8535938.pdf
    • http://drew-powell.com/uploads/1/3/0/2/130289681/7556d3.pdf
    • http://modupeolabc.com/uploads/1/3/0/8/130814177/976554.pdf
    • http://icomedy.club/uploads/1/3/0/2/130273790/e33429f.pdf
    • http://elvishomesgardening.com/uploads/1/3/0/2/130273776/safowijevak.pdf
    • http://poetrycult.com/uploads/1/3/0/5/130541743/ramupo-konar.pdf
    • http://cahalstephens.com/uploads/1/3/0/6/130622076/f55457d3b365e.pdf
    • http://myhempisbomb.com/uploads/1/3/0/7/130775778/fezebos.pdf
    • http://truegrit.org/uploads/1/3/0/5/130551457/7421781.pdf
    • http://peeweeskitchen.com/uploads/1/3/0/6/130604582/zukizawusolos.pdf
    • http://marketingshingle.net/uploads/1/3/0/3/130312986/xexirunew-vorelimidar-vexudu.pdf
    • http://tahayasir.com/uploads/1/3/0/6/130639448/2180794.pdf
    • http://belgiumil.us/uploads/1/3/0/2/130270793/4647472.pdf
    • http://getgavel.com/uploads/1/3/0/5/130543169/1060285.pdf
    • http://speed-gemmes.com/uploads/1/3/0/7/130776167/9664205.pdf
    • http://clwcleanup.com/uploads/1/3/0/5/130588728/juzigajenij.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e93b.bin
19f82ba00254eaedab1e6437d8cc7e02c81000e65426d1be524a89dce13394b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 9648 bytes
font_01_sfnt_off00010dc3.bin
4144669cd0414b4668a4ab24666780f2909a4ba68007f54639ea08f485405f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC3 2784 bytes
font_02_sfnt_off00011779.bin
5327377c9c90809c8946eea313108ea934f8e0fd488e90fbebee3287b24dcc8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11779 16136 bytes

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