Malicious PDF — malware analysis report

Static analysis result for SHA-256 932fbdcd6b3a712b…

MALICIOUS

PDF

77.5 KB Created: 2021-04-05 16:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 146c145b8a4045b90f8b0511f1cd76b8 SHA-1: af5125b7e14ccb070dde40f5ec8e5d698ea9567b SHA-256: 932fbdcd6b3a712b43cebe868ab0a76424bd9119aa825578ab46b0263fda3334
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily truncated, appears to be a lure related to product manuals, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=toastmaster+5+cup+coffee+maker+manual PDF link annotation
    • http://bukawavado.medianewsonline.com/quaker_steak_and_lube_menu.pdfIn PDF document text
    • http://moneymaya.site/9231055504m9e2c.pdfIn PDF document text
    • https://setopotuvojinow.weebly.com/uploads/1/3/4/8/134877086/tifujagefof_lujuk_dofegav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_6022e5cc59c13.pdfIn PDF document text
    • http://kukushpa.fun/99124284929nevww.pdfIn PDF document text
    • http://jakor.pro/lurinifom9u1.pdfIn PDF document text
    • https://dogeneli.weebly.com/uploads/1/3/0/7/130776728/lisivuk.pdfIn PDF document text
    • https://bijixaxiferagew.weebly.com/uploads/1/3/0/7/130740480/5680773.pdfIn PDF document text
    • http://uscovidcharts.com/35436516869wev3.pdfIn PDF document text
    • https://bigimenuxorotel.weebly.com/uploads/1/3/4/6/134655509/wutewifefos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426820/normal_5feb27daee02a.pdfIn PDF document text
    • http://cabinetshq.xyz/51214232105z9djx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486359/normal_6050c73e19c70.pdfIn PDF document text
    • http://zokupez.mygamesonline.org/52695024562.pdfIn PDF document text
    • https://rumikupim.weebly.com/uploads/1/3/5/3/135310872/rijakaditojik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_6027365526433.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitujiduruv.myartsonline.com/78421567960.pdfIn PDF document text
    • http://dejibokakar.onlinewebshop.net/fagokagimudoxajanov.pdfIn PDF document text
    • https://254b3b0b-79dc-4992-827c-fd4bb3db3178.filesusr.com/ugd/f515ca_ea7f442bc36c4a45a2dbb63fb8ea2643.pdf?index=trueIn PDF document text
    • https://bc5ba30c-e427-49eb-abc4-9677f18f04c1.filesusr.com/ugd/bcd086_1c75db6a51914ae5ab9b4f71caa62af6.pdf?index=trueIn 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_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 5300 bytes
SHA-256: 7413b5b7006ad5c96dbd60125bbf137d2db2bf136be10333a9f68b09c52c31d2
font_01_sfnt_off000103d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D5 10384 bytes
SHA-256: 67171f5ba2e58e3b93c2f39fe26aaf15d66a38c829645eca9e6c15fcccebcc27

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