Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d97d639259cd7fb…

MALICIOUS

PDF

50.8 KB Created: 2020-03-25 14:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 465ba579663539d4aec5dda9b28d9ea5 SHA-1: 70969ee37b6613d5a3fcd8b48266672f7cdb6772 SHA-256: 6d97d639259cd7fb40848f32247d57abd54f288831ca20929b8c743b0f7aa737
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to other PDF files hosted on similar domains, suggesting a link farm or SEO manipulation scheme. The embedded URLs likely lead to further malicious content or phishing pages.

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://sgmtrack.com/uploads/1/3/0/8/130873945/130873945.html#objetivos+de+pensamiento+critico+y+creativo PDF link annotation
    • http://www.qualitygoods2020.com/uploads/1/3/0/7/130739474/2265ee.pdfIn PDF document text
    • http://gigsidehustle.com/uploads/1/3/0/2/130271201/jepuvime.pdfIn PDF document text
    • http://electricbicycleassociation.com/uploads/1/3/1/1/131163828/1160238.pdfIn PDF document text
    • http://easyphpwebsites.com/uploads/1/3/0/6/130604111/govefufifojuxu-femasopox-wolamowopizij-kigosupi.pdfIn PDF document text
    • http://spektrumaudio.com/uploads/1/3/0/8/130874210/4830396.pdfIn PDF document text
    • http://codypartyblog.com/uploads/1/3/0/8/130874034/2945052.pdfIn PDF document text
    • http://mx.riolimousine.net/uploads/1/3/0/3/130313643/tupowi-xadibomevonoti.pdfIn PDF document text
    • http://luccacosmetics.com/uploads/1/3/1/0/131070583/232afd8a66b7.pdfIn PDF document text
    • http://essenceofu.com/uploads/1/3/0/3/130324420/wumizasok.pdfIn PDF document text
    • http://suatborazan.net/uploads/1/3/0/6/130621840/a203d.pdfIn PDF document text
    • http://portsmouthweddingphotographers.com/uploads/1/3/0/6/130639334/kejugulab_tevizodidewuk_ximezu.pdfIn PDF document text
    • http://jakepentland.com/uploads/1/3/0/4/130436014/selujolad.pdfIn PDF document text
    • http://www.surfnturfholidayapartments.com/uploads/1/3/0/6/130621342/e28a18dc98452a6.pdfIn PDF document text
    • http://warnerknife.com/uploads/1/3/0/3/130324167/4484070.pdfIn PDF document text
    • http://yourbusiness-buddy.com/uploads/1/3/0/2/130274330/wopijupolavefo_jexuzumigojen_morexibeduwami_xuvati.pdfIn PDF document text
    • http://webmail.zaitoldme.com/uploads/1/3/0/7/130776367/5071374.pdfIn PDF document text
    • http://fatnail.com/uploads/1/3/0/2/130291579/natuvawa.pdfIn PDF document text
    • http://mantoieoew.agency/uploads/1/3/0/6/130603975/winomagavo-sikigal-jifor.pdfIn PDF document text
    • http://www.trendingtiptop.com/uploads/1/3/0/9/130969421/vekeg_pobudinixe_dotitezu_dedod.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
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Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000890e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890E 8368 bytes
SHA-256: 6c432f7126a1f4ebe845138799e54634a549b9751b32fe6ddc693975d4e4116e
font_01_sfnt_off0000a799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA799 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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