Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b0e2e063778b4d…

MALICIOUS

PDF

80.6 KB Created: 2021-03-21 21:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 23e6e85927424d54db4dc4ea9e653378 SHA-1: c30b86f87249ca971b63eec3de8efdbb595cf035 SHA-256: 84b0e2e063778b4dea749206e80056e34d62ac232cbc8f7844d17f28954d5e72
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=materials+to+build+a+mission+project PDF link annotation
    • http://cesaregaspari.com/relewuxizujop762t4.pdfIn PDF document text
    • http://pusokum.66ghz.com/centos_6_dvd_iso.pdfIn PDF document text
    • http://bajoreto.sportsontheweb.net/vepopolofi.pdfIn PDF document text
    • http://lngcliente.com/virginia_woolf_moments_of_being_summarylsjsn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_604b6fecea046.pdfIn PDF document text
    • http://koduxipib.iblogger.org/fugumup.pdfIn PDF document text
    • http://jisubumutowegur.22web.org/drdo_ceptam_9_syllabus_2020.pdfIn PDF document text
    • http://sugamipilafo.iblogger.org/nuvudewewexorebabenatip.pdfIn PDF document text
    • http://gemofesane.medianewsonline.com/cessna_182_parts_catalog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505837/normal_603d3666882ff.pdfIn PDF document text
    • http://honey-love.ru/siramopazefuxixe6uut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444114/normal_6015b94a8c81c.pdfIn PDF document text
    • http://romeital.space/zewutunf2ife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483337/normal_602d823b88430.pdfIn PDF document text
    • http://streamsweets.com/meade_autostar_telescopetbx1l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_487ddd9e116c43ceb6b28d5dd2ef88da.pdf?index=trueIn PDF document text
    • http://gojudupawoziwex.epizy.com/84959262512.pdfIn PDF document text
    • http://jujitonogisalo.epizy.com/uniquely_human_barry_prizant.pdfIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_e31f9c8e078e4040b1dc3c8fdddfcb08.pdf?index=trueIn PDF document text
    • http://xapimiwosusuv.epizy.com/briggs_17.5_compression_release.pdfIn PDF document text
    • http://vubolax.epizy.com/weruw.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_off0000fe9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9F 5440 bytes
SHA-256: 9d014686ea78d81d07deef5823b42e2233133925623c22dc18f5ce8d283880eb
font_01_sfnt_off0001110e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110E 10484 bytes
SHA-256: 3d3ab66d640fff8b0c010044d5e5f679e2bcdc619f974ae9aa8f9096082aff85

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