Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d582def2853eb3…

MALICIOUS

PDF

88.6 KB Created: 2021-03-14 17:30:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: af6fd6b4f8d56dae6ade8762d161851c SHA-1: 5574c912aa0884388aa0daa55c77c19735fe3b81 SHA-256: 69d582def2853eb36dd9fafd7f912bf29cb5dfce9fa79c6cfb4c57e157100e6d
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and the presence of numerous URLs suggest it may be used to distribute further payloads or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=fifa+mobile+soccer+mod+apk PDF link annotation
    • https://nozitobolilijaz.weebly.com/uploads/1/3/4/4/134473425/wekopobaxux_xupidapikaf.pdfIn PDF document text
    • https://wajotirege.weebly.com/uploads/1/3/5/3/135306859/pobarep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/puretulenuza/school_incident_report_form_teachers_nsw.pdfIn PDF document text
    • http://bixogonabu.epizy.com/light_chain_amyloidosis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/98505955348.pdfIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_138f00a65eaa4b0d839f5325c5458fca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovezux/active_and_passive_voice_online_quiz_for_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/24331566201.pdfIn PDF document text
    • http://bisodusar.epizy.com/2200904901.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/83899066684.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/4223371163.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/49241540228.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/73241106301.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_81ab0d00e71f4e0eb16637b108ecdba4.pdf?index=trueIn PDF document text
    • http://xeravujowa.epizy.com/23455678648.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/tanonagemujaxelinag.pdfIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_1786834dc293445b98bc5bc240202f04.pdf?index=trueIn PDF document text
    • http://dagoduroxuto.epizy.com/category_theory_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/bathymetric_lidar_waveforms.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/basic_accounting_system.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/toyota_red_tag_days_ottawa.pdfIn PDF document text
    • https://5902ff30-e651-486c-ac37-3e8383bfa78f.filesusr.com/ugd/f35da0_8023f133795049e6b0cb778e40da0c40.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF550 5060 bytes
SHA-256: 525ce30096eef303cbc40bb7c20f3a420c5fde64c73fe8527da3aed370d58507
font_01_sfnt_off00010684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10684 13132 bytes
SHA-256: e5e560d84f10620ef8af1119134ac04227319a4e12d3382de44327ef8f57034f
font_02_sfnt_off0001319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1319B 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_03_sfnt_off000146c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146C9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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