Malicious PDF — malware analysis report

Static analysis result for SHA-256 25649363ca01c766…

MALICIOUS

PDF

32.2 KB Created: 2020-05-15 09:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 6f17063370bba29cfdfeb6dc19832923 SHA-1: 9f68e236535a04a5aab04dd14c77a75fd8e4d33d SHA-256: 25649363ca01c766b178852ec3d4f3c4818bc72858933b6ec18a8a99a7e1a4a3
96 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, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, also contains embedded URLs. These links likely serve to direct users to malicious websites or to manipulate search engine rankings. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://financialinstituteofamerica.org/uploads/1/3/1/3/131380158/131380158.html#belling+built+under+double+oven+manual PDF link annotation
    • http://thenodramamamas.com/uploads/1/3/0/2/130289254/1f3df6fc062359d.pdfIn PDF document text
    • http://mysanmigueltennis.com/uploads/1/3/0/2/130272557/1ebf4f207c.pdfIn PDF document text
    • http://blueraingutter.com/uploads/1/3/0/5/130545954/wetigemajakub.pdfIn PDF document text
    • http://solclothingusa.com/uploads/1/3/0/7/130739883/lifuzonuga.pdfIn PDF document text
    • http://spanishnoemy.com/uploads/1/3/0/5/130551586/d5db9c.pdfIn PDF document text
    • http://ffipurelife.com/uploads/1/3/0/4/130476821/514d96996aff.pdfIn PDF document text
    • http://huisalumni.com/uploads/1/3/1/4/131437956/geketazema-kolarunuzinunen.pdfIn PDF document text
    • http://bobbinandweavingdesign.com/uploads/1/3/1/4/131406659/467e9561c644.pdfIn PDF document text
    • http://southamericarealstate.com/uploads/1/3/1/0/131069968/fugavizowaganuf.pdfIn PDF document text
    • http://artsybugstudio.com/uploads/1/3/0/8/130873818/detoworofugu-bikoropel-lawoleguwatanoz-xaxufegoju.pdfIn PDF document text
    • http://aadamtradersltd.com/uploads/1/3/0/5/130550925/xiwusafenusulikizo.pdfIn PDF document text
    • http://elearningprose.com/uploads/1/3/1/4/131407687/tewedaxaduved.pdfIn PDF document text
    • http://valleyrage.com/uploads/1/3/0/8/130814193/xivimekolikujon-goguva-rigekejovajaz-wudakerowogin.pdfIn PDF document text
    • http://mainhealthsolutions.com/uploads/1/3/0/6/130620631/tofusize_debiruxe_febokirip_fivosejerop.pdfIn PDF document text
    • http://northernlightsperuvianhorseclub.com/uploads/1/3/0/8/130874586/7844945.pdfIn PDF document text
    • http://wtfurniture.com/uploads/1/3/0/7/130739956/mokimoxoropeluxomu.pdfIn PDF document text
    • http://willemwijs.nl/uploads/1/3/0/6/130639896/4535133.pdfIn PDF document text
    • http://seatsandracks.com/uploads/1/3/1/4/131454549/3519490.pdfIn PDF document text
    • http://justinsworldofsoftball.org/uploads/1/3/0/6/130640194/4186857.pdfIn PDF document text
    • http://secretvipcompanion.com/uploads/1/3/1/3/131379541/gonofasusezipokafage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5489 9464 bytes
SHA-256: 104750dc229da523f4ec15164434463328a657c4670ef505e33bb5de760c25d8

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