Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69f81b17dfb4bdc…

MALICIOUS

PDF

65.8 KB Created: 2020-12-19 04:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bf4efe4463141fa5d762627e7f4a9881 SHA-1: 95774ef82facb97badedb0836ed100dc7c42b5ff SHA-256: b69f81b17dfb4bdc9164acd6595d345b77dfca309d8ab15417d90e1d002b20ba
214 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 and routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?utm_term=wray+high+school+baseball In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f8a887d210b3.pdfIn PDF document text
    • https://gazofifato.weebly.com/uploads/1/3/4/4/134496451/d38a7c3cae9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f9ee77bca04b.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/47764971-20f0-4029-972f-91daaf53ea4d/firmware_update_for_my_pioneer_avic_z120bt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eee2f321-6b98-4b06-88a6-922b85cdc290/80969370185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdd643c5-1ee4-443f-9271-a15786e5d47a/underwood_master_typewriter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c4257d2-b11b-43a0-9f7c-b029f8c6e88c/chu_ga_eul_kpop.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf3603c02f22b9dd28b91/1606284144848/i7-4510u_vs_i5-8250u.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b65169-32f1-4164-80b7-868515d8acb1/pokemon_mystery_dungeon_red_rescue_team_rom_cheats.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1d933485235c868db6c4/1606294934658/plaza_de_las_americas_puerto_rico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a1ba38f-68d5-41f9-9105-7586da0594b2/lumimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ceaf3c-be3a-4f08-b2d6-1d4a5ad38bd5/qualitative_risk_analysis_matrix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba640b0-2c48-45ef-9c07-a9b17008db0c/printable_blank_comic_strips_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1d4d5f9-98f7-40da-be40-9960a850cb9e/61154537162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5828b19-eead-4e92-bade-a5c15c09827d/jubin.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_off0000c4c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C3 5316 bytes
SHA-256: 027413fa77cfbd02aacf5e8e2ba6e62d75438df86dac4f957c98b108a2d41517
font_01_sfnt_off0000d6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EB 10528 bytes
SHA-256: 46d4558f7d20ac4f7f11c00df243a1c1be9e70f41edeaa81c965317bb7fe892f

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