Malicious PDF — malware analysis report

Static analysis result for SHA-256 418d68bb1a074b6c…

MALICIOUS

PDF

32.1 KB Created: 2020-10-08 01:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0bed6e4e57653af833466cb74f4be686 SHA-1: 35b8d87b6ba731152598b0832730a6e515141fc4 SHA-256: 418d68bb1a074b6c647dbefefba905b703f61b3a71790756b0cfb5e1c323d489
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by a machine learning classifier and contains a significant number of embedded URLs. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one URL points to known malicious redirector infrastructure, and 'PDF_SEO_LINK_FARM' suggests a large collection of external links, likely for SEO manipulation or to host further malicious content. The presence of these numerous links strongly suggests an attempt to redirect users to malicious sites, potentially for phishing or malware delivery.

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.link/pify?keyword=cactus+flower+cafe+pace+pace+fl In PDF document text
    • http://xitowired.topstonecanada.com/uploads/1/3/1/6/131637254/d4b55278c0e.pdfIn PDF document text
    • http://files.luciearcher.com/uploads/1/3/1/4/131412032/jureziluvexomuv_simojivu_jukanim.pdfIn PDF document text
    • http://files.lcpbandboosters.org/uploads/1/3/1/4/131437376/temuxune.pdfIn PDF document text
    • http://bimenofo.indianafarmtable.com/uploads/1/3/0/7/130775490/27eaf5b83923.pdfIn PDF document text
    • https://site-1044191.mozfiles.com/files/1044191/futinul.pdfIn PDF document text
    • https://site-1042282.mozfiles.com/files/1042282/wegarunomesovi.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/3992624271.pdfIn PDF document text
    • http://mivijobop.modernsageevents.com/uploads/1/3/1/4/131454207/gevidodikuzote.pdfIn PDF document text
    • http://rujavuka.healthnatureau.com/uploads/1/3/1/8/131872144/dagisuwozimorejibup.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/1/0484/4086/9014/files/buwurenagimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3784/1813/files/vexisoxomitojinowijerof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2450/1912/files/waboleduvonanumenuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0515/5227/files/18961107788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/the_phoenix_and_the_turtle_translation.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_off000042b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42B1 5004 bytes
SHA-256: 3ccfd1e3ea0b4e53be155bd384cdfb37c9ee3b01b05718ae34474203c7ef012a
font_01_sfnt_off000053d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D5 9364 bytes
SHA-256: 40dc694db154cd3c4734f82dc07dd849b4dbdbc33cd337406aeefb03a079af32

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