Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aab29892df35dff…

MALICIOUS

PDF

57.8 KB Created: 2020-10-28 21:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 72f743a0a262a1530087174f3b5bd8ce SHA-1: de4d74a6a1a16670f09d7bf0f6aae5bdeb485c25 SHA-256: 9aab29892df35dff8d49d637704ab6a1d7ec7796cbe5aa8d11c0fa3be2deb18d
184 Risk Score

Malware Insights

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

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 0.9999

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/123?keyword=clear+vision+2+hacked In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f8e7e68d2527.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/80e56d498663.pdfIn PDF document text
    • https://gogozugibijom.weebly.com/uploads/1/3/4/3/134369614/7feeaae1.pdfIn PDF document text
    • https://zovodexipelozas.weebly.com/uploads/1/3/4/4/134401167/riguraxuroj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f8b94a9e24f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f94c37bad7cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8745efc6536.pdfIn PDF document text
    • https://wumunelopilum.weebly.com/uploads/1/3/4/3/134395902/6029c15c74a8f7.pdfIn PDF document text
    • https://bemuzulezevateb.weebly.com/uploads/1/3/4/4/134440878/7730d.pdfIn PDF document text
    • https://natufebopod.weebly.com/uploads/1/3/4/3/134305275/sewuviw.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/aa8bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f878b630e4e1.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/22531c38.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/pujija-vuxidabefezaj-xujipedizire-boduv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d13f7dd4-534e-4210-8398-2ec8e50c970f/82196345439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d024e08-e510-49df-b77c-eb6f7fb0f83a/puzepupakijigobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/collins_cobuild_dictionary_of_idioms_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3251/8049/files/42133415772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325e4aa2-a540-4ab7-b364-dbbfbe19c546/taremufobuxusukunobemuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e9e6043-8fef-47c6-be1e-b786ec861594/effects_of_uranus_in_astrology.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/simibumesibepu.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/73896745885.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/apples_to_apples_junior_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/68201712587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4097/6291/files/39645446389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e67643-e942-4d6a-aab9-95d8e78bca68/93493554088.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_off0000a408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA408 5188 bytes
SHA-256: 01347f6c4dad396adbac441dfa7583294f6f95bb274a76477cb9e0cf5c609788
font_01_sfnt_off0000b5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5A8 10592 bytes
SHA-256: 7fd39484034e5a43e318bf77c6530d68809fdbf2c10aad1b3c4bc35b3eb08338