Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1c8540b444b249…

MALICIOUS

PDF

69.5 KB Created: 2020-11-30 09:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 134c5c46282b101302b207558d271bc2 SHA-1: 95b69f40bb6c574a448ae13e14b72d52cbef32b6 SHA-256: 6b1c8540b444b249ea7a0182a34b9dc387684dc42884762e925882aafd3cb630
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://traffset.ru/strik?utm_term=ffxiv+mineral+water PDF link annotation
    • https://pilorixo.weebly.com/uploads/1/3/4/6/134689004/nefududo.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/12d70e49-7f4a-4d5f-972f-6c900cb7bcb1/12710420486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffff8568-e2db-4b93-b873-1c2d58c0e546/wisivisaxopi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fa33c6ccf69f354fa8b/1606373284224/kingdom_hearts_dusk_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/127e768d-b50d-4cb4-ae78-e8f736ada893/sedatagupujos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a67c86b7-946a-4d41-b299-ceab2e0d1572/xixakiwarimimapalelixil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0957b4c4d833b8bf4ab5/1606224216229/fuzasekufituxufaka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf9d073299f0c5439c0f2/1606220241371/49903421187.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/appium_inspector_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc1cc003f75b16643169067/1606536192857/tour_de_force_definition_francais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd0845b-a51b-4ad0-86c8-8274283f0b01/66476328009.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a7c4f98375720d7910e/1606376061348/primera_esposa_de_marco_antonio_solis.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/59101473937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005a720f-d9bb-4806-abdf-d2d727409c7b/54887932586.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_off0000d569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD569 4912 bytes
SHA-256: 1afe8b3000968af45693e107909bb9cc9b37556d76c12bb1f7a4d37b0b7293c4
font_01_sfnt_off0000e61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61C 10184 bytes
SHA-256: 2cfc24afeac8c4b3a0d254e1bda371530ce37ae082d3b1bdcb9944c2828fd3fe

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