Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d023607079d756…

MALICIOUS

PDF

70.6 KB Created: 2020-12-03 12:13:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d15e2cc2b7b9a4093f969ec5b73e6e4f SHA-1: 90871ae2fa209d21bfa5c8126364a273df258378 SHA-256: e2d023607079d756f794c95dbd62274cc72596180f24e459e71c41aa791705f1
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://trafficel.ru/aws?utm_term=guide+du+routard+thailande+khao+lak PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5fc059cfbb5b7.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/vezesenurefejazak.pdfIn PDF document text
    • https://tuxonojetivap.weebly.com/uploads/1/3/4/4/134437157/4759988.pdfIn PDF document text
    • https://mukeluxera.weebly.com/uploads/1/3/4/5/134528716/kopawunolavudow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460725/normal_5fba88b30a809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5f89e3556ddea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390323/normal_5fa30ef049dac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5161452f90b7fe5ab7f/t/5fc880d18eecd53e39ecdee1/1606975698932/rivukulikopar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3989977-5ec4-4296-b8b8-658573fa514f/11278424099.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d3b00b6b03258f353712/t/5fc23a956457125654862418/1606564503670/waduxelaxurabugivisaxag.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/sotuxalotagapa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58cd0085bf90c0e1cb067/t/5fc7e8892669d559a4867e1a/1606936714297/wixetesevidupasibusagijil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f49283-b78e-4d6a-9d8c-f9683d78a4fb/senwa_s6000_firmware_actualizacin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf48b0fa04221c71165cc4/1606371505049/tenor_sax_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c8fa27a199023ac1a380/t/5fc7e7d90581dd30a08b6a9b/1606936542075/racing_download_games.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD742 4832 bytes
SHA-256: e225be24a75c04c84070745e7273a5f655b2101856a9a65c3815f50739951c2b
font_01_sfnt_off0000e7a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A0 11048 bytes
SHA-256: b1ac8d9d0155d07840fbe38ec8acd530ce8feb753980cc7b1123421ea9ba00e1

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