Malicious PDF — malware analysis report

Static analysis result for SHA-256 c481e2cc26d8d9b4…

MALICIOUS

PDF

70.6 KB Created: 2020-12-15 03:59:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2a04a963cea7457eac991438670effce SHA-1: b184392d2d10f1fc1af7ed7ca8efd7cd15119a0d SHA-256: c481e2cc26d8d9b4fed963a14b839025dd4279520153ab97c7b332b57f99be22
214 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to redirector infrastructure or link farms, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly suggest this malicious intent. The embedded URLs are designed to lead users to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cctraff.ru/123?utm_term=pictures+of+george+washington+and+abraham+lincoln In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/3156467.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/sodixegavubokob-sozifajavoledim-migakuxodeniza.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/60bc2a2e2726a.pdfIn PDF document text
    • https://zuvopejibi.weebly.com/uploads/1/3/4/0/134017525/78dd0d67d0cf25d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5d0e9b1ed03538d2954d/1606376719479/port_royale_3_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5947b0b6b03258f5520ec/t/5fc6757c2dd96f5918cbf245/1606841725352/vodebufu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc7be7593ad1a481227d961/1606925944125/sexobowupofaxemivaluponu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdef9a145a8629dc757d0c/1606283163930/ford_mission_statement_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28998403f5353fda0357a/t/5fc3e63f3485235c863e7d60/1606673984577/65034106171.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c697bda9c57a97c4683c/t/5fc3f1bb2dd96f591867d53d/1606676926379/78775426347.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_off0000d451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD451 5668 bytes
SHA-256: 60d566a2d86c7e56ad915f454682c7072025313d87a86b055d445b87af4eb9a8
font_01_sfnt_off0000e77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77C 11104 bytes
SHA-256: a66217a5ee22b0ef7f18537bcc1a2633fd05fb3f506ca736f6ca8dcbb0fcbb49

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