Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6fed902e660301…

MALICIOUS

PDF

69.4 KB Created: 2020-11-24 04:06:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 5d5b3fdf50fc0379867ed3b3061bd1f3 SHA-1: 50998be280a76943ee91d9124a889f3433491992 SHA-256: ef6fed902e66030175c0ac8d062136839be69650d107d503343525a093f2e405
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains numerous external links, likely to facilitate SEO manipulation or distribute further malicious content. The 'SE_REMOTE_SUPPORT_LURE' heuristic indicates the document may instruct users to install remote support tools, a common tactic for gaining unauthorized access. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a phishing or malware distribution scheme.

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
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://trafficel.ru/strik?utm_term=the+last+olympian+book PDF link annotation
    • https://xovonanukotu.weebly.com/uploads/1/3/4/8/134898985/sedimaruwoj-dexujatara-zijuvevaxed.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://tanipodolotuweb.weebly.com/uploads/1/3/4/4/134457000/9324631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_5fad50d434da6.pdfIn PDF document text
    • https://vovufopoxin.weebly.com/uploads/1/3/4/4/134466437/0824b9db9141b0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391314/normal_5fb2b79a5c8a4.pdfIn PDF document text
    • https://judikojegewag.weebly.com/uploads/1/3/4/5/134583508/220cc4b5d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_5fa349c26461d.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/susema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406241/normal_5f942a0a53159.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/xuxifuzituwu/approaches_to_the_study_of_international_relations.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/kulibone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/929a46d6-7ae4-4164-bb41-f7e684ca804a/southeast_asia_treaty_organization_a.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/gears_tv_app_download_for_firestick.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/xotitakijisatadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da4bd078-fcd8-4bce-bfd3-45c4b9eb5957/gugegi.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/is_tree_a_biotic_or_abiotic_factor.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_off0000d335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD335 5216 bytes
SHA-256: 64d4c80b23072501a569fa474b79c587062c9720c27dff7c9e732c26485203bc
font_01_sfnt_off0000e4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D0 10388 bytes
SHA-256: 260f0317822c3df61a761e8a7180f9fcd7d93b6c00bc147c95cc761f9e21547b

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