Malicious PDF — malware analysis report

Static analysis result for SHA-256 9497ddd00b19f084…

MALICIOUS

PDF

38.2 KB Created: 2020-03-31 00:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: acb9a44b1d0d17f9b8ff76827d0ac26b SHA-1: d2714838ef59b63c51187e96d5ccc8063e09f861 SHA-256: 9497ddd00b19f084823842467d1ce47097dd1759589e1c39357f3377543c8c65
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are numerically or generically named, indicative of a link farm or SEO spam campaign. The document body, though partially corrupted, contains text suggesting it is an educational worksheet, which serves as a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous embedded URLs supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://beeseyecandy.com/uploads/1/3/0/8/130874612/130874612.html#lewis+ser+and+estar+worksheet+answers
    • http://topetestsite.ca/uploads/1/3/1/1/131163664/4684440.pdf
    • http://reddaggerairsoft.com/uploads/1/3/0/7/130776299/tejupadi_wulenoriritan_xujixasadekowot.pdf
    • http://jaspermardigras.com/uploads/1/3/0/7/130776054/7c0b6504fdc7e4.pdf
    • http://scubieee.com/uploads/1/3/0/7/130739549/6736701.pdf
    • http://explorerestore.ca/uploads/1/3/0/6/130639032/lujofun_mewatilelaga.pdf
    • http://capitalcommercialpainting.com/uploads/1/3/0/6/130620835/1890559.pdf
    • http://grace-parker.com/uploads/1/3/0/4/130483626/1adb4897cf0b.pdf
    • http://goatsarefucked.com/uploads/1/3/0/7/130738903/wazoregexurofavo.pdf
    • http://dixiedeermerchandise.com/uploads/1/3/0/6/130621900/muzezopigizo.pdf
    • http://unitedreturn.com/uploads/1/3/0/5/130539990/nogirazoz_zubatagiweg_lixevik.pdf
    • http://thirdeyekennels.com/uploads/1/3/0/5/130588513/93c3e.pdf
    • http://allterrainbooks.com/uploads/1/3/0/2/130288761/c34a5f2.pdf
    • http://houtworm-bestrijding.net/uploads/1/3/0/5/130588973/27dd4888ce5.pdf
    • http://benjohnsonva.com/uploads/1/3/1/4/131409822/8033644.pdf
    • http://patricksgarage.com/uploads/1/3/0/4/130488924/2452050bc.pdf
    • http://theberkeleyagent.com/uploads/1/3/0/8/130813504/jekan_marigimuke_kunizerikefivil.pdf
    • http://canvasbysharmila.com/uploads/1/3/0/9/130969627/6367151.pdf
    • http://2inspire2bfree.com/uploads/1/3/0/9/130969266/e77db7fd9a27.pdf
    • http://modmarillc.com/uploads/1/3/0/4/130488415/c5666d.pdf
    • http://colo-ip03.mnemonix.com/uploads/1/3/0/4/130489247/dd9071.pdf
    • http://feelfoodfriendly.com/uploads/1/3/1/4/131438093/gekikaloseraxuk_rekusiw_nafun.pdf
    • http://powerfulchange.org/uploads/1/3/0/7/130776791/d7a1336.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c38.bin
c2d9c30f802124e189120cf0bed90454b6c231958b7120e8afc97d47561c01eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 8044 bytes

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