Malicious PDF — malware analysis report

Static analysis result for SHA-256 3025e3c6b1265e3f…

MALICIOUS

PDF

71.0 KB Created: 2020-11-14 08:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 72c92f2bddda8f7138e223f2a11d976e SHA-1: 2a94f649afd973a7ce041c0b637a11829acde10c SHA-256: 3025e3c6b1265e3f75a67ace0baef41e6ae21c12cfdecefc4b08e6e688630c23
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9998

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 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 https://traffking.ru/123?utm_term=rough+green+snake+care PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414696/normal_5fa6ce8fe4bcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f905c9a79788.pdfIn PDF document text
    • https://jupisururixed.weebly.com/uploads/1/3/4/3/134339091/duxafas.pdfIn PDF document text
    • https://taxajadotediru.weebly.com/uploads/1/3/0/8/130873824/5766104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f903418252f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464700/normal_5fa5713727e39.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/b7dcd55086845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5f96329757ac4.pdfIn PDF document text
    • https://soremezu.weebly.com/uploads/1/3/1/0/131070226/4e68f731fa6ca6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f88154118b20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388063/normal_5f97f517d8f67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/33442a4c-517a-4498-a47a-1990b5fa12b6/como_jalar_una_llamada_de_otra_extension_panasonic_kx-t7730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a92b4223-6a30-403c-b08d-c0017f266263/somifudozamebanemuzigase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd6618f0-b344-4632-9803-bc8ed2243f1a/41146092480.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/independence_day_anchoring_script_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd6a425-5a99-4d2d-8e07-ee4e7c7668c7/there_s_no_way_lauv.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/tamilrockers.com_2020_movie_download.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_off0000dbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB2 5100 bytes
SHA-256: 178dd59fc48c5eb1adfacc0367306d474475394a0e368601d25935340ade9c10
font_01_sfnt_off0000ed0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 9948 bytes
SHA-256: bbd174b8539393a81c552d6dce799155002864440031589aba24610ca9ef90b1

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