Malicious PDF — malware analysis report

Static analysis result for SHA-256 969001ee86c7f229…

MALICIOUS

PDF

64.2 KB Created: 2020-12-04 00:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f6aa6eca715d3d862745de497acdec47 SHA-1: df06e9a26c48172cbac38c4aea7c87b99a1e2f7d SHA-256: 969001ee86c7f2294c61d20320495ca6145a218f3af100d68f15714549fecf4d
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF contains numerous links to external websites, including a known malicious redirector and a link farm. The 'ClickFix' heuristic indicates the document likely instructs users to press Win+R or paste a command, suggesting a social engineering attempt to bypass security measures. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://traffmen.ru/strik?utm_term=avast+rpc+server+unavailable In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419630/normal_5fa304229429c.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/9109794.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/5fc007006609fd0ee78c7004/t/5fc0ddbe3485235c86e6cbff/1606475198746/figubibogazepipapufozed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcefce2c6de34c7a379fd9/1606217678754/taxojajasofejepelijak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cc67f3-0d25-4983-a58d-9bcfa961c299/46147923708.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e3d06b97992eb568e234/t/5fc667cfeaf37e3b6477bba2/1606838224498/hill_climb_racing_3d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d37758-bcfc-45bd-8fe4-368828351f76/interview_questions_on_oracle_sql_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56d9988c99b6d37c5c202/t/5fc938bf5e24766df35cfcd1/1607022784661/software_update_on_mac_not_working.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf1ff3485235c868a96ca/1606283775834/10025235735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ed058e-46c2-4d60-be34-bf1cad861428/lufijoxukug.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_off0000c227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC227 5116 bytes
SHA-256: 77c61967c366cdb442a117f669a14ab565510c9940353b59e170d23cb5f16840
font_01_sfnt_off0000d39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39E 9500 bytes
SHA-256: 5694f8e4c576d672c3daa1951fba11aa4ff809675194dbbf96f11c0f85feee67

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