Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ecba8e85d07274…

MALICIOUS

PDF

68.2 KB Created: 2021-02-13 18:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 776515750e69c4b4c6dbeabc93331499 SHA-1: d4605adb19ae2515cbf78ead8cdbba3e497a0153 SHA-256: 65ecba8e85d07274f766821d59f7dee47b59dad72aa98d638ba6e724b91fd9c0
186 Risk Score

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://druttle.ru/wix?keyword=try+flexible+mirror+canada PDF link annotation
    • https://nefarixuk.weebly.com/uploads/1/3/1/4/131407944/2256576.pdfIn PDF document text
    • http://healthytrands.com/operational_amplifier_circuits_design_and_applicationayq16.pdfIn PDF document text
    • https://nabinavupofi.weebly.com/uploads/1/3/5/3/135350319/totibutojekivu.pdfIn PDF document text
    • http://devlp.club/vetawojopenfyxb8.pdfIn PDF document text
    • http://giveaway2020.info/drift_clash_online_racing_mod_apk_unlimited_moneyghxbt.pdfIn PDF document text
    • https://nokifijipuf.weebly.com/uploads/1/3/4/3/134305843/16f802a.pdfIn PDF document text
    • https://gavufiwi.weebly.com/uploads/1/3/0/7/130775220/lizowuvapeb.pdfIn PDF document text
    • https://nixifekenebuj.weebly.com/uploads/1/3/0/7/130775280/zatenoxefotiwerisom.pdfIn PDF document text
    • http://zootime.store/lab_equipment_worksheet_ks3xi8lo.pdfIn PDF document text
    • http://peludofnor.fun/nclex_infection_control_study_guideb4xte.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5fff52b56a213.pdfIn PDF document text
    • https://repawuwo.weebly.com/uploads/1/3/5/3/135313919/giwodiwami.pdfIn PDF document text
    • https://mobesometug.weebly.com/uploads/1/3/4/6/134644263/vetupitag-bekenid-jepikoxese.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464534/normal_5ff43a0bd3958.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/lonijotakurawob.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/gekojulog/crystal_reports_xi_runtime_license.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/mandatory_reporting_decision_tree_qld.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_off0000cfe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE4 5248 bytes
SHA-256: fe460a4c32b43c65940c00ac3b9b4696e74e15c1ffd2f042bf821df07f096ed8
font_01_sfnt_off0000e1b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B5 10036 bytes
SHA-256: 04726d09808757200a5c96c9b32f9ac09026e7ab5fa4e8b5082bafda63ca93c6