Malicious PDF — malware analysis report

Static analysis result for SHA-256 f545f1b2abc15a94…

MALICIOUS

PDF

91.8 KB Created: 2021-02-25 19:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 31e4cf6a97f04e913f715c85a86b98b5 SHA-1: c5f156afb68164fe6980d593e7e2735a488e9557 SHA-256: f545f1b2abc15a94524ec045369d5eb9f925436b443e342c599ce0d3c9131c76
164 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a large number of external links, many of which point to benign PDFs, but the primary URL https://seumenha.ru/123?utm_term=whirlpool+cabrio+wed6200sw1+repair+kit is suspicious and likely leads to a malicious payload. The presence of a 'download button' heuristic further supports a phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/123?utm_term=whirlpool+cabrio+wed6200sw1+repair+kit PDF link annotation
    • https://ruxapumuful.weebly.com/uploads/1/3/4/6/134682584/peteposajomonur-xipoze-zekisolepikudiv-tazikadopili.pdfIn PDF document text
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/wagomajinesakalebux.pdfIn PDF document text
    • https://zewugijisisu.weebly.com/uploads/1/3/4/8/134885238/lanupemexore-foxuvoviribuju.pdfIn PDF document text
    • https://zowukabizuvor.weebly.com/uploads/1/3/1/6/131636697/powomaxekenujale.pdfIn PDF document text
    • https://zopadujebononi.weebly.com/uploads/1/3/1/3/131380983/4310991.pdfIn PDF document text
    • https://cdn.sqhk.co/xotalawad/geVjihi/gipezukenewudus.pdfIn PDF document text
    • http://xabibumat.iblogger.org/definition_of_forms_of_business_organization.pdfIn PDF document text
    • https://zoladawa.weebly.com/uploads/1/3/4/1/134108991/doxamuvululome.pdfIn PDF document text
    • https://kefawefixak.weebly.com/uploads/1/3/0/7/130738991/7732852.pdfIn PDF document text
    • https://fakoronad.weebly.com/uploads/1/3/4/7/134712901/rusitigedisa-juxasasadov.pdfIn PDF document text
    • https://wokonupojelofa.weebly.com/uploads/1/3/5/3/135351156/nemefurinadu-divirapof.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/dixaleko/place_value_grade_1_lesson_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/21272894176.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/80293697733.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/46638713117.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/does_walmart_open_tomorrow.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/57914791920.pdfIn PDF document text
    • http://jitimixilu.epizy.com/ofsted_report_childminder_inadequate.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_off00012401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12401 5948 bytes
SHA-256: 30f20843e4be2687b1d672de75c2463c455023227a0b4658adc8ede1679022ae
font_01_sfnt_off00013850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13850 12780 bytes
SHA-256: 00751a740e6ff72bb9d6ad23c304c7a72acde02c0fa586c0a8a05003e6a17fbc

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