Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c8b1f241cfc0d3…

MALICIOUS

PDF

69.3 KB Created: 2021-03-02 04:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 990fa70469aac7a6c91c3dcc60b62f0e SHA-1: d64873c027ec7ea48ac587b2e1863235ed8ca84e SHA-256: b8c8b1f241cfc0d3f522f36aae387b4205c5251e2ed3b4f90fe0e76a97a34d49
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://mezovuduw.ru/wix?keyword=passe+compose+worksheets+grade+7 PDF link annotation
    • https://cdn.sqhk.co/sivefuxonix/kQjeojY/kid_rock_songs_youtube_amen.pdfIn PDF document text
    • http://zugamumenune.22web.org/pozubamelogojubajurojovu.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/aijshdq/mountain_bike_tires_26_x_2._50.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/48274241325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_6010ca05145f4.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/gfuibie/tivifigoker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426263/normal_5ffb60b5b3c07.pdfIn PDF document text
    • http://didazema.mypressonline.com/xizawevom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416656/normal_602834b50525b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419441/normal_603d7f34ccb92.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/76647219307.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/wofevamijuginerawedez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/telasebisu/what_are_some_modern_day_false_gods.pdfIn PDF document text
    • http://vebefabose.epizy.com/fitax.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/27840093338.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/51344098411.pdfIn PDF document text
    • http://zipemoluligera.myartsonline.com/88274550432.pdfIn PDF document text
    • http://gepaboveron.epizy.com/alto_s_adventure_for_pc.pdfIn PDF document text
    • http://jifazuniduvosi.epizy.com/xabazidizasufinutevomox.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/asus_p9x79_pro_pcie_3.0.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/76326475549.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B5 5692 bytes
SHA-256: 2787e3214a634acd6b9c49f5e895ad6227cd6a2e65b324bf025d3b4a119c3331
font_01_sfnt_off0000e5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FE 9792 bytes
SHA-256: f88143ae7e6e7054042afe6d81ae1f3aa0957887df032471de02df5f21b27de5