Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c116d9ef0ee35cf…

MALICIOUS

PDF

77.3 KB Created: 2021-05-22 03:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5d8e153fcf12ba68a08d3509c3a96658 SHA-1: 980f301d83daec34d368a658a053669f203166fb SHA-256: 0c116d9ef0ee35cfcbd6286e54d20f084eae60098e7a1eed868e05f0c34bd9a8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier further indicate malicious intent. The embedded URLs likely serve as a lure to download further payloads or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5485

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=free+simple+investment+agreement+between+company+and+individual+doc PDF link annotation
    • https://toxobeveja.weebly.com/uploads/1/3/1/4/131437160/20216.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5fe25e45994bf.pdfIn PDF document text
    • https://mojetene.weebly.com/uploads/1/3/5/9/135957439/a5472f.pdfIn PDF document text
    • https://sujujiga.weebly.com/uploads/1/3/1/3/131379538/553aefce2e.pdfIn PDF document text
    • https://gizivesokopupa.weebly.com/uploads/1/3/2/6/132696604/1482463.pdfIn PDF document text
    • https://xedatuvigino.weebly.com/uploads/1/3/4/5/134580066/rarifozutijutuxex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446944/normal_60606735a74b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391624/normal_6003e89bb5d43.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/15d9540b-dbd5-4faf-a53b-051ccebeef57/the_soul_collector_2020_imdb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0231529b-c660-4107-8906-0a2eacab92af/2103222481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7735f5-9d94-46fe-91a8-2893acbd742f/what_happened_in_america_between_1776_and_1789.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/61857306626.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/lemufib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abc8a582-dd5e-4edc-bf5c-c852d5dd56de/jawbone_up2_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c59f07c8-61ce-4e93-86ad-35acf1dbccde/junalu.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/22092273844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a321770a-212d-44c5-92c2-3be96ea4fa8a/11457288004.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/verbal_infinitive_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/bnp_paribas_mutual_fund_statement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a699a9ce-7062-4a7f-9585-500d25836cc6/hidden_pictures_color.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bbdc5cf-71e2-445b-a76a-a90396950038/95541152316.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/disciplinary_letter_template_acas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc40f66e-fe6a-44a2-a268-ef1650da3c39/1785502337.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/circle_powerpoint_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/kagejusexanu.pdfIn 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_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 5624 bytes
SHA-256: 438018da40fe730330bf1258773de1ba5eff85710bb6a778f56a77f0c0bb8d69
font_01_sfnt_off00010d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D12 11476 bytes
SHA-256: 6a822910ad6067f86a0361fe5978936e79d18a33d1bc597ac1f0fa0c1fcef6dd

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