Malicious PDF — malware analysis report

Static analysis result for SHA-256 798b9e86e4a05e08…

MALICIOUS

PDF

54.7 KB Created: 2020-03-29 09:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6dbb413bb56e461b63ba9ef89549ea1d SHA-1: d60c00839b9e5f1ba67fe355894aab13f10c5dde SHA-256: 798b9e86e4a05e084f189bb9d2d1b4c108b1f04e7ca4570b04d365722c8a8232
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, suggests a lure related to 'English communication examples'. The primary heuristic identified a link farm structure, indicating a likely attempt to drive traffic to various hosted content, potentially malicious. 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://7levelselling.stefanaarnio.com/uploads/1/3/0/8/130874066/130874066.html#ejemplos+de+comunicaci%C3%B3n+verbal+en+ingl%C3%A9s
    • http://oaklandcommunitycouncil.org/uploads/1/3/0/2/130289636/6507004.pdf
    • http://kimistryrose.com/uploads/1/3/0/8/130874583/finuduronek.pdf
    • http://www.catjajohansson.dk/uploads/1/3/0/9/130969681/mokubejowun.pdf
    • http://ecotots.ie/uploads/1/3/0/4/130435734/c6be1.pdf
    • http://wepaintct.com/uploads/1/3/0/7/130739662/girimo.pdf
    • http://www.rockshaaft.com/uploads/1/3/0/5/130588457/91495ca32.pdf
    • http://racebaseuk.com/uploads/1/3/0/4/130488158/70031ab46b2bfd.pdf
    • http://reconciliarte.org/uploads/1/3/0/4/130476743/0028d360fd.pdf
    • http://animenewsnetwork.org/uploads/1/3/0/5/130550969/gajukilojalerorubu.pdf
    • http://hostmaster.sallycathcart.org/uploads/1/3/0/7/130775220/27202.pdf
    • http://thaddeusnhizfamily.com/uploads/1/3/0/7/130776499/e5f76.pdf
    • http://dorsetheartdoctor.com/uploads/1/3/0/7/130739261/9601938.pdf
    • http://regaliaforhope.com/uploads/1/3/0/4/130490218/wujad.pdf
    • http://gelatotroppobuono.net/uploads/1/3/0/6/130639203/fuwasamerak.pdf
    • http://poerecords.net/uploads/1/3/0/7/130775641/7795253.pdf
    • http://thoughtandbelief.com/uploads/1/3/0/5/130590435/7094356.pdf
    • http://mansester.com/uploads/1/3/0/7/130740044/kazalijolizag.pdf
    • http://mta-sts.alessandrobrighetti.com/uploads/1/3/0/9/130969868/bomuwifejexisali.pdf
    • http://vulcanonline.org/uploads/1/3/0/3/130379158/019d6def6.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090e0.bin
328eaf7de62dc1aaf0a5d3a26d737efaef0bb183d3ca717dec5e05d5498543a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90E0 9576 bytes
font_01_sfnt_off0000b37d.bin
ad219f6d8f84f4d63173db6297d9dde79704f5143808ffe5d79fed491746633e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB37D 16576 bytes

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