Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1473c6a818b420…

MALICIOUS

PDF

72.2 KB Created: 2020-11-19 01:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: daf4edcbf701c13e2e814d4c976dcfa4 SHA-1: 9d69459c4f8e26aa77c7766e735c88d06a6a9daf SHA-256: de1473c6a818b420aec73325ecb5040892f4f3f0c0a21c4c8ec36598aff63067
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 0.9997

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 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://traffine.ru/strik?utm_term=el+pollo+loco+ingredients+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457000/normal_5fa28566c39ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_5f9ceb7f4fb5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fa1a920dc382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_5fb5a12a08ccf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f8aeb3d914e7.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/5051828.pdfIn PDF document text
    • https://dagojamigim.weebly.com/uploads/1/3/4/7/134763314/rejojunobulobevotu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tevigotu/parallelism_writing_with_parallel_structure_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/dikutodirilidemitogatuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f161b775-7d78-40d9-ace3-4c7b1aa18d4a/24120536457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df7e2371-f1c3-43c1-8bac-68cf48cdf852/77705269121.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/xaxozibarofabamedezas.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD047 4776 bytes
SHA-256: f1b0c80fdad5a0d16003314098eaa3b81a021623d4c8c721b6f48ff829b05dc8
font_01_sfnt_off0000e085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE085 10892 bytes
SHA-256: 9cb1272dcdefe40bfd61285b70e9ecf56b7041842e59187849c6420663b575f8
font_02_sfnt_off00010598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10598 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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