Malicious PDF — malware analysis report

Static analysis result for SHA-256 695eb01c98f154e7…

MALICIOUS

PDF

73.0 KB Created: 2020-11-13 06:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7c8f27818faac0cfdc7708a04f7a6ed0 SHA-1: b212b1c965ee83807025375dbbf67209c009b509 SHA-256: 695eb01c98f154e7571124a3387b89f28ef0c1489ea38e84d1c5d4509c04c556
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/strik?utm_term=install+slic+certificate+windows+7 PDF link annotation
    • https://dotelotud.weebly.com/uploads/1/3/4/6/134696787/divesamefogevu_budejodepovewa_zamofupi_zukabobuxezaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f87535882ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_5f9ad12c5d3c5.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/74a5cfe963fba2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f9bdf88b69d3.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/79a6de99.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.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/82d20b01-a1f6-474b-9e0b-eb43b598471a/losunudelumifaratadis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/339e38b3-ea33-4cb2-9f99-537f9fd70410/92440440187.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/dawilavefakusofidepamu.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/pirates_treasure_quick_guide_rs3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0491ea09-3d0a-4927-9b36-344570c875da/breath_of_the_wild_book_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492d56fc-23de-4d7d-84cd-41137ff8c456/alexandria_train_station_to_vale_of_leven_hospital.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ddff3dd-19db-472d-ab04-bcb85c486efa/kunujegazadidigopix.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/prova_auditor_fiscal_da_receita_federal_2014.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_off0000e114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE114 5124 bytes
SHA-256: c23930a8a15bc94805965731604fdf9a5e92310e7ae0b07eb8cc90f73c5d88e7
font_01_sfnt_off0000f2ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AC 10644 bytes
SHA-256: 5aad3c401b880aaca759efb7ab99a5125b8e39299bd8474abe3f85c29c8fbfa8

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