Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae1185c36c566bc…

MALICIOUS

PDF

70.6 KB Created: 2020-11-12 16:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e48f9b3eca4fa097e522eeda185c1df0 SHA-1: dedfde55ae49f2a79df93da2f7e62f396c153f40 SHA-256: fae1185c36c566bc5f39ce849f8e4e0f10e74d5cb2fb5f521ae8134b92ff11af
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=cisco+ccna+service+provider+study+guide PDF link annotation
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/7637698.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/1503947.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/ritiluxiditupofuvod.pdfIn PDF document text
    • https://wavopotajulaja.weebly.com/uploads/1/3/4/6/134631105/3195914.pdfIn PDF document text
    • https://vavagufone.weebly.com/uploads/1/3/4/3/134345741/kupukow.pdfIn PDF document text
    • https://xarisoxetawekox.weebly.com/uploads/1/3/4/3/134399368/2680246.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/nepux-jovabilomima-fadosu-sesisanus.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/2f1c8a90-b6ff-42be-80b7-46b6863203c7/59975204502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91003bba-c1ad-4529-b615-73f8f4bae842/bowigamakevarisovowumewuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/21334349724.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/70264572913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad09dd04-dbb5-4e41-a823-0c74d7e8a8e7/lovevuditemeda.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/kuzufodisirimej.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/alvaro_siza_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e30e8d9b-496f-4269-894c-a78bee3cde0b/92255050966.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/kiran_publication_maths_in_hindi.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_off0000d3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AC 5276 bytes
SHA-256: 483726a23575acea805a91e3856b808d1305c0cd033d75327892e1c4659cfbb5
font_01_sfnt_off0000e5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BD 11524 bytes
SHA-256: c1fa5a5818d85b6ba1bd4c186c5dd96c9f57af3780c03264c3ae2c42f19e5348

Open this report in the interactive analyzer, or submit your own file for analysis.