Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08d2838dfa37be4…

MALICIOUS

PDF

86.3 KB Created: 2020-11-17 03:55:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fd4c9ebf0273d02e575457214696434f SHA-1: df73e537076d3556065cf9c4507339d8bf17ec7d SHA-256: b08d2838dfa37be467536731ad2552f14319254be8f839226fa380f8ecd46828
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal Application Data T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an MFA/2FA-themed lure. 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 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://traffine.ru/123?utm_term=odyssey+part+1+study+guide PDF link annotation
    • https://fabodafulunulof.weebly.com/uploads/1/3/4/3/134372089/davoka_jepugolirekir.pdfIn PDF document text
    • https://lajogaful.weebly.com/uploads/1/3/4/4/134481829/kezekov-jawovibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5fa380d588641.pdfIn PDF document text
    • https://pomitowu.weebly.com/uploads/1/3/4/3/134389192/zijiz-nivawi-luxoxizuze-bowubamopos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5fa026130019e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fa3f07577a03.pdfIn PDF document text
    • https://jinonapipi.weebly.com/uploads/1/3/4/4/134481743/3dac9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459935/normal_5fa8021c59eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428334/normal_5fa6058e24a15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f9f619b1d305.pdfIn PDF document text
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/gavud_fadevez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zedudo/orange_county_buddhist_church_obon_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/james_baldwin_another_country.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/things_that_start_with_the_letter_b_worksheet.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_off000113b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B2 5276 bytes
SHA-256: dd0af558282874bb847c4cd6860bbad2c83afd95327c55a92857699f8fc2e4e3
font_01_sfnt_off000125bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125BB 11328 bytes
SHA-256: 656f98574f0db846c90231ec3762139ed3a56526cdb3e26c076f4348386c1744

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