Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcbbcc45a8f5a73…

MALICIOUS

PDF

35.1 KB Created: 2020-11-07 07:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3524cc2fa3ecbba5bb67b8680ef6cfc4 SHA-1: 1cb52fafd4460fdac3ada2dd9937ea9cdd5dcc63 SHA-256: afcbbcc45a8f5a73b8434ee66bfa617792337ea525770e380e6d9acaaba07e03
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to link farms and redirectors. The primary malicious URL identified is https://gettraff.ru/123?keyword=jones+meat+market+jacksonville+il, which is likely used to redirect users to further malicious content. The document's structure and embedded links suggest it is part of a link farm or SEO manipulation scheme to drive traffic to malicious sites.

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://gettraff.ru/123?keyword=jones+meat+market+jacksonville+il In PDF document text
    • https://julapaxukej.weebly.com/uploads/1/3/4/4/134492969/7216496.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/6701395.pdfIn PDF document text
    • https://guxolufesa.weebly.com/uploads/1/3/4/4/134468064/tumurejavula.pdfIn PDF document text
    • https://noxurujoba.weebly.com/uploads/1/3/4/3/134384046/wumafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sipodugegir.files.wordpress.com/2020/11/36185910287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccc9194f-02a3-45a8-a387-be8522b671f9/nomet.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/pofirowuwifiso.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/parkaya_pravesh.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/the_covenant_halo_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9864943a-6e42-4270-8ea4-ef1a4c3cfe4c/48292437929.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/canada_411_reverse_lookup_canada_411.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_off00004aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAE 5132 bytes
SHA-256: 21c8cb1c6b8529581e56c514f3702a9abccc8c0bf07cb35f7baed29d8850f91c
font_01_sfnt_off00005c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C17 10524 bytes
SHA-256: 9d6ec970045c1963e4d719e5e797e261cbeea01ffa6a72812ce2c0f00bf7ba86

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