Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e72ee455f429d13…

MALICIOUS

PDF

61.6 KB Created: 2020-10-28 12:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b7328ee09d9fda3115ba1394fcb5e02c SHA-1: 5d081365c40e6af4834623415fe2811dd815e68a SHA-256: 1e72ee455f429d13a5ee05744e2918313448d27573cda1c9d243eb6c57697e34
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/123?keyword=emergent+layer+trees In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f88d047efe6c.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412158/normal_5f993689847d9.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/juwegij_fumoxaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f88386078571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f938ae87b521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f961c321ac66.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/lofomamefomasowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3771/6391/files/best_powerful_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3015/0809/files/offline_epub_to_converter_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6354/8325/files/neumonia_grave_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8982/8771/files/string_format_android_resources.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7424/8600/files/wind_energy_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/convert_to_amazon_kindle_format_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/nice_guidelines_on_luteal_phase_support.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3734/0060/files/10162433437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0844/4574/files/antonio_machado_proverbios_y_cantares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/fupezutolofevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8602/0775/files/mijaxopupoxofiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6089/8213/files/doug_theme_song_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/34777622427.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/libro_aceites_esenciales.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_off0000b41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 5064 bytes
SHA-256: cd1985c3ebb38cda984235a66889c9365424ed0d9efa9e869b7af6cfe030e7ac
font_01_sfnt_off0000c549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC549 10572 bytes
SHA-256: 73c53bede3d0b8479b9a0511431a125eac860307de22554149870f5ca59be40b

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