Malicious PDF — malware analysis report

Static analysis result for SHA-256 68bfa902a6046db6…

MALICIOUS

PDF

75.9 KB Created: 2021-04-26 17:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c84e0182d0de7264266ddaff552db6b7 SHA-1: 59c722b00fef760a761d0fe38c7d5590920e2f33 SHA-256: 68bfa902a6046db6f20d50ec4952d2501246fc6a9565598ad634168cfa937de3
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to suspicious domains and are likely part of a link farm or phishing campaign. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and ClamAV detection confirms this is a malicious PDF, specifically identified as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, suggests a lure related to a 'cooking' guide, which is likely a pretext to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=on+cooking+6th+edition+chapter+1 PDF link annotation
    • http://fly-drive.online/designing_app_for_pc_free_download5svku.pdfIn PDF document text
    • https://besukobar.weebly.com/uploads/1/3/1/0/131069863/xomesipara-pezuru-rurexuk.pdfIn PDF document text
    • http://spainsale.pro/73167712602rprbi.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/10th_maths_guide_download_2020.pdfIn PDF document text
    • https://sivajusirev.weebly.com/uploads/1/3/0/8/130814673/zogatigifuzidu.pdfIn PDF document text
    • http://finoginujowiwi.mypressonline.com/white_christmas_tree_with_led_lights_australia.pdfIn PDF document text
    • http://edayafar.xyz/ziwilokuforeful9x52.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/biblia_de_referencia_thompson_en_espaol.pdfIn PDF document text
    • http://fitness-ital.fun/best_gear_oil_for_drag_racingqhfiq.pdfIn PDF document text
    • https://gatuxarujesij.weebly.com/uploads/1/3/5/2/135296766/zisegugip-bovidugufeniwod-rekagizaw-lovirulunimu.pdfIn PDF document text
    • http://gopagafab.medianewsonline.com/inferno_by_dante_alighieri_free_download.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/lugodawixativeseb.pdfIn PDF document text
    • http://sewawena.scienceontheweb.net/belajar_coding_python.pdfIn PDF document text
    • https://mewotevavaxaviz.weebly.com/uploads/1/3/1/0/131070751/1605585.pdfIn PDF document text
    • http://ribavid.medianewsonline.com/80910325179.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/rowubunak/47977442610.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/what_think_win_win_mean.pdfIn PDF document text
    • http://bavotuvezomevi.myartsonline.com/radawevexinak.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/46723355414.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/jopavijozowowunamem.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/67504305162.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/html_css_javascript_portfolio_templates_free_download.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 5424 bytes
SHA-256: 32712a50a68799886a492e7778c2d6fec869c8b6b3bc6bc6ece42153d9b38709
font_01_sfnt_off0000fe87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE87 10532 bytes
SHA-256: 5739e3f24bbb9e731aa0c98408b28ff15ead5bf6aae030afc03662a61f99280b

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