Malicious PDF — malware analysis report

Static analysis result for SHA-256 b35d881062ced30b…

MALICIOUS

PDF

84.1 KB Created: 2021-03-26 02:46:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9aa1277e6b4437afa42d656a71c31c98 SHA-1: 7e58507bb07c75bcca191a7f3416820e566a97c6 SHA-256: b35d881062ced30b8edcd7d8f6f477dfb4fb9a3cdd01b6be5bd9c10a065950ef
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or phishing. One prominent link, 'https://gimoguvi.ru/strik?utm_term=investing+books+for+2020', is flagged as suspicious and likely leads to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://gimoguvi.ru/strik?utm_term=investing+books+for+2020 PDF link annotation
    • https://motabuwupogofe.weebly.com/uploads/1/3/1/6/131607229/kovipesivofonuxisufe.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/iogdhd3/among_us_sticker_whatsapp_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471467/normal_5fd8c514e4abd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443624/normal_5fd7c5258523f.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/jinapuneri-xorufikuxilo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5ff2ac7e47aee.pdfIn PDF document text
    • https://cdn.sqhk.co/gobumavurob/hcEjjsL/marktplaats_account_aanmaken_particulier.pdfIn PDF document text
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/zuminofasedoxutapil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445749/normal_601093d766f48.pdfIn PDF document text
    • https://lekofubazag.weebly.com/uploads/1/3/1/8/131872104/zaroner.pdfIn PDF document text
    • https://silorofolukut.weebly.com/uploads/1/3/4/2/134265947/4ce57c78c402ec.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/jfMif9d/ms_project_2013_free_download_32_bit.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/ginutu/51059238737.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/77344352917.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/flea_dirt_on_white_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0087feb7-066c-4df9-9d27-14a8d94e07b8/72059082498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48beb43-c04e-4152-afd7-16953b6126d1/investments_tenth_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/worksheet_8_polarity_and_electronegativity_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee395f8-1fed-4284-90e1-77280c74e176/norelco_s9000_prestige_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49bd7f86-17db-490b-8341-743d8a888432/ladotejetax.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/pool_table_cad_block.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99e90e53-36f5-4739-ac19-18fdab9e1509/xolilafufuvurifejilavuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da2e63e-a1a6-448b-ac3b-fec36f5038b6/vivitek_qumi_q6_projector.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_off00010a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A81 5168 bytes
SHA-256: 055839a31bd5013c453279710dced6976178ffcdcf45c9767d3ed3852fa2b839
font_01_sfnt_off00011c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C39 11504 bytes
SHA-256: b2a0be5125323e18cc47b8bb305f103e83e8345dc8172821f3604e03ff65abd4

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