Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0682d454d54af67…

MALICIOUS

PDF

109.7 KB Created: 2021-03-22 22:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23bdf0c871dbee96e1f573516d2f2648 SHA-1: 5b68657adfb7891f7509fab656f47729c448b80b SHA-256: e0682d454d54af679851c67bc7848a7f52f9c8b539e47b2c265582cfc6b5dcf7
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 0.9997

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://crophysi.ru/123?utm_term=tipos+de+inteligencia+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455660/normal_5ffe1a44e4323.pdfIn PDF document text
    • http://kudorifet.22web.org/sukatadexigisedig.pdfIn PDF document text
    • https://gegilegaf.weebly.com/uploads/1/3/1/3/131383227/bde91d957f4ef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444655/normal_5fe1293d458ce.pdfIn PDF document text
    • http://gasolotiravizid.sportsontheweb.net/51103242756.pdfIn PDF document text
    • http://sungo1.space/71232155388498wc.pdfIn PDF document text
    • https://welajewovire.weebly.com/uploads/1/3/3/9/133999455/zupuneximuboto.pdfIn PDF document text
    • http://bijepitujutix.sportsontheweb.net/4510332110.pdfIn PDF document text
    • http://front-glass.space/wevalapijimupv1tm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_60531358c39e5.pdfIn PDF document text
    • https://mamumudud.weebly.com/uploads/1/3/0/8/130814078/pulogovokuxizen-vidazopudojax.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/rapobigipudurubabe.pdfIn PDF document text
    • http://lovepositions.info/the_secret_garden_movie_201860hqm.pdfIn PDF document text
    • https://vibofizetukoz.weebly.com/uploads/1/3/0/9/130969748/jozumilexog_pijiluxowat_voxivotinezove_bopaxoxedas.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/vuxono.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/tutasujal/58778274850.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/lotijoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/padewunusikuvenuxinupuped.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/82235055350.pdfIn PDF document text
    • http://sovezogodum.rf.gd/expression_web_4_html5_templates.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_off00016be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BE1 5176 bytes
SHA-256: a46f0f497951fd8862a3624a6f087fe561aaf4181877711a876c65cc665bd527
font_01_sfnt_off00017d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D9B 12964 bytes
SHA-256: 3e5793e3443a539a92f953f979e5369c5488c84bd9ac1fbbb048a980921bc65c

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