Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ba6e510de1c42a…

MALICIOUS

PDF

80.9 KB Created: 2020-12-05 18:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 45ffccb0b13646c0e568508e25c58af6 SHA-1: 123ace6550e4236c251bdac1b7e460fc46de401f SHA-256: 03ba6e510de1c42a9f25eb5d51b22f338b89c38adea0e640be35b415ad04d21a
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/aws?utm_term=html5+template+free+gallery PDF link annotation
    • https://sosufafa.weebly.com/uploads/1/3/4/8/134862430/sositukezeku-nosozimoki-puvaduralidajok.pdfIn PDF document text
    • https://xumolatakikekum.weebly.com/uploads/1/3/4/3/134335049/9918661.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/pesetufavo/fibakesokuzusodiseja.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/impossible_quiz_24_question_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9539520a-4ea3-4d16-b544-51093ab59472/a_bblia_do_tarot_minhateca.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/lijapowiku.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/shwedagon_pagoda_history.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/tisizatidisozib.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/ielts_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/cs6519-2_vtech_phone_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/gigelix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ebb4b50-991c-40d8-9797-935b444c58ed/40152024455.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/agenda_2019_para_imprimir_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/42682798315.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/abbreviation_list_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/youtube_penguin_chick.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_off000101ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EE 5228 bytes
SHA-256: c65d2e11f5a1ab3bd77899a4342681f6429df955cbe3939c1d89954a7453c2e0
font_01_sfnt_off000113b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113B0 10320 bytes
SHA-256: 24eb044797156cf5d1715d14a52c23c7e3a752894e9f874d8d0d670eb95994d0

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