Malicious PDF — malware analysis report

Static analysis result for SHA-256 3522912f65a70f88…

MALICIOUS

PDF

40.2 KB Created: 2020-03-29 23:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 95f1cce32510d4a7f0ba936fc1d65ff8 SHA-1: 26fbb555fddf0374b956ab29c43521621469b9b8 SHA-256: 3522912f65a70f88adcc583e445e0846a6e7219a3000100b4562db848b3d439e
62 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, a common tactic for SEO poisoning or redirecting users to malicious sites. The document body, though partially corrupted, suggests a lure related to educational material. The heuristic PDF_SEO_LINK_FARM firing indicates a deliberate attempt to create a link farm, likely to drive traffic to the listed URLs. No scripts were extracted from this sample.

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://colddiamnd.com/uploads/1/3/0/2/130289589/130289589.html#material+de+apoyo+cuarto+grado+septiembre+octubre
    • http://yudrew.com/uploads/1/3/0/3/130379158/bopinisediworozu.pdf
    • http://villa-martinazzi.com/uploads/1/3/1/3/131380171/7e1cb5c2e71.pdf
    • http://lauralemay.net/uploads/1/3/0/7/130739297/mifon.pdf
    • http://outside-of-the-lines.com/uploads/1/3/1/4/131413485/zejena.pdf
    • http://geo-simpatico.com/uploads/1/3/0/4/130490399/d413eca3cace2b5.pdf
    • http://nathanbrooker.com.au/uploads/1/3/1/3/131383823/bomudutekavep.pdf
    • http://campdejourhockeydemortagne.com/uploads/1/3/0/7/130740389/dodenekafanaru-vujajivud-sunurax.pdf
    • http://pcbudgetsolutions.com/uploads/1/3/0/4/130488583/nabiwobipedab.pdf
    • http://kevinmentzer.com/uploads/1/3/0/8/130874613/befokolenepirik.pdf
    • http://rcbshopping.com/uploads/1/3/0/3/130313212/gevojefufusisiw.pdf
    • http://markheggaircraft.com/uploads/1/3/1/1/131164293/2635450.pdf
    • http://coedcademy.com/uploads/1/3/0/6/130639450/dikated_juzisetudegisav_vowowesorakef_zarun.pdf
    • http://robertopacas.blog/uploads/1/3/0/8/130813818/afbcc8c77.pdf
    • http://learnganow.com/uploads/1/3/1/4/131437669/217910.pdf
    • http://evasive.us/uploads/1/3/0/4/130491008/xabewapigex-zajuwijipimas-towolizilubo.pdf
    • http://barrelman.org/uploads/1/3/0/8/130814355/webedoben_zujodozidezuku_nofejuwewirokix.pdf
    • http://kanasaechout.com/uploads/1/3/0/4/130488417/c91f852f7563a8a.pdf
    • http://spazindustries.com/uploads/1/3/0/4/130436242/f23b4ebb.pdf
    • http://odinequities.com/uploads/1/3/0/4/130483679/391c3e.pdf
    • http://lovebirdarbors.com/uploads/1/3/0/6/130604612/ropitokasib.pdf
    • http://conversations4life.com/uploads/1/3/0/2/130272336/zedonibetagu_folasomavadap_waraxilidofixi_sixulufuvuguw.pdf
    • http://thezapps.com/uploads/1/3/0/7/130739086/dolobapavafi_nebojosorumemov_tazivasalus.pdf
    • http://activesupportresource.net/uploads/1/3/0/8/130873996/vamusuzabofer.pdf
    • http://mouracontabilidadeonline.net/uploads/1/3/0/4/130489423/5554025.pdf
    • http://eaglesrockonprestonisland.com/uploads/1/3/1/3/131380011/f543a0e1d.pdf
    • http://activesupportr
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fab.bin
3a490048d86fa0902b2172e6fa3e4d6886009e3ea5b8ca1580d94406b6c0798e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 9136 bytes

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