Malicious PDF — malware analysis report

Static analysis result for SHA-256 6787d088c980f5a1…

MALICIOUS

PDF

78.3 KB Created: 2021-03-29 18:20:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04097e6277fc3f56f65c0f65640cc5c4 SHA-1: cdf924a8ad84147fb6bb00406dc8ab0e7f169068 SHA-256: 6787d088c980f5a1288a9c3c5f20cdf2bff5aedb9182567d1afda69cdb677815
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm with numerous external URLs, including one that appears to be a lure related to 'transformational leadership in education'. The presence of multiple disposable hosting domains and UTM parameters suggests a phishing or spam campaign aimed at driving traffic to potentially malicious sites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/123?utm_term=definition+of+transformational+leadership+in+education PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fe6132640245.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/hg1jdmC/31053953758.pdfIn PDF document text
    • https://cdn.sqhk.co/nivepudokoto/IQjgT3x/lagu_westlife_soledad_mp4.pdfIn PDF document text
    • https://cdn.sqhk.co/dekorasenu/3jdOwhi/wejowekagugaw.pdfIn PDF document text
    • http://iciapp.xyz/2930083443ieuwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_6015b84443bf9.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/EThbhdm/oxford_introduction_to_business_management_10th_edition.pdfIn PDF document text
    • https://gawozigojuvapa.weebly.com/uploads/1/3/4/8/134896601/vuwopididaz.pdfIn PDF document text
    • http://cherrypimp.online/iosh_managing_safely_4.01uukh.pdfIn PDF document text
    • https://morogixifidogaj.weebly.com/uploads/1/3/4/4/134497599/3647727.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/ifhdzje/javaranuzirigorasume.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/qhieejb/wizabo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_60192b2df0440.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/ifhihaX/5k_vs_marathon_times.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://notadagas.rf.gd/how_to_use_delorme_inreach_se.pdfIn PDF document text
    • http://xojabujujipeze.rf.gd/can_an_electric_pressure_cooker_be_used_as_a_slow_cooker.pdfIn PDF document text
    • http://kariwukopufemu.rf.gd/total_video_converter_windows_7.pdfIn PDF document text
    • http://mukesowumoj.rf.gd/shining_force_cd_guide.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_off0000f471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF471 5396 bytes
SHA-256: 7b47f98ea1cd5c349b9d2bb9b75e41b0aaa19726e9a58801b3b2f2c6bd447bd2
font_01_sfnt_off000106a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A3 11148 bytes
SHA-256: bfa064b025ca2d7e4942bedddca33ff5e0a9925b8ffc678a814c2bb6447ec915

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