Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a55564447364da…

MALICIOUS

PDF

36.3 KB Created: 2020-03-28 08:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1e12748e1b4c1e13316c90e51fa86265 SHA-1: 60569fd776995ff0a3ccedea5130959f6b65daeb SHA-256: d7a55564447364dac3274e3354c45547ff8b76c86ca19cb22aa41cf54b3074c7
94 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF documents on different domains. The ML classifier also flagged this PDF as malicious with high confidence. The embedded document body text, though partially corrupted, includes a URL that aligns with the observed link farm behavior. This suggests the document is part of a link farm or SEO manipulation scheme, potentially used to distribute malware or drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://jonandlindsay.com/uploads/1/3/0/4/130488583/130488583.html#gu%C3%ADa+de+sexto+grado+montenegro
    • http://myears.net/uploads/1/3/0/8/130873976/668bb8967fe058.pdf
    • http://www.belovedgoodsshop.com/uploads/1/3/0/9/130969722/964932.pdf
    • http://mindregard.com/uploads/1/3/0/7/130775803/vazimujuteti.pdf
    • http://sarahchoi.rocks/uploads/1/3/0/4/130483956/6997432.pdf
    • http://scottgpo.com/uploads/1/3/0/7/130739122/7115577.pdf
    • http://html.guillome.nl/uploads/1/3/0/2/130292179/1fc74b6bc.pdf
    • http://trueattireco.com/uploads/1/3/0/2/130272369/f1d803756f220.pdf
    • http://charliescutz.com/uploads/1/3/0/9/130969899/2c505808c2c8f5.pdf
    • http://adventistasnc.com/uploads/1/3/0/6/130639397/lujevobatitu.pdf
    • http://vaycayu.com/uploads/1/3/0/5/130589389/2f276b7bb0.pdf
    • http://alchemybuilt.com/uploads/1/3/0/9/130969488/1510746.pdf
    • http://blognathtreta.com/uploads/1/3/0/3/130379266/4833716.pdf
    • http://remote.comppro.com/uploads/1/3/0/7/130739086/f4f7d.pdf
    • http://forex.johndixson.biz/uploads/1/3/0/7/130775405/8668227.pdf
    • http://allisoncastle.com/uploads/1/3/0/4/130436315/jumekekedine.pdf
    • http://www.accomposites.com/uploads/1/3/0/2/130292173/viwuta.pdf
    • http://oxaudit.com/uploads/1/3/0/5/130551231/9655639e653a8fe.pdf
    • http://loveinaction.center/uploads/1/3/0/7/130739663/dunifovixaxotad.pdf
    • http://michael-montoya.com/uploads/1/3/0/5/130544584/gerob.pdf
    • http://jvwritingv4.club/uploads/1/3/0/4/130475879/vesasetebamil_wikaroniwupe_vezawama_detezamix.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_off000065aa.bin
d503add372d0f8a48f3afb0be35c1ad4c32513a00029bff877bbd31549ce03f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 7684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.