Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d604e7773de0e3…

MALICIOUS

PDF

42.6 KB Created: 2020-10-31 17:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b6040e956c16a75b729f04c0814e265d SHA-1: d0377e9fa7bbbb4695bd00c064a04bae39acc039 SHA-256: 94d604e7773de0e35fe05704299600a68b5e1af29e0999dff82fbc0f98ed49ac
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirectors or are part of a link farm designed to manipulate search engine results. The primary malicious URL identified is https://ggtraff.ru/wb?keyword=federal%20competition%20and%20consumer%20protection%20act%202019%20pdf, which is flagged as a malicious redirector. This indicates the document's purpose is to drive traffic to potentially harmful websites.

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://ggtraff.ru/wb?keyword=federal%20competition%20and%20consumer%20protection%20act%202019%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f94875876a0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_5f9259116a8c4.pdfIn PDF document text
    • https://debekekuwafa.weebly.com/uploads/1/3/4/4/134473288/39a225eadd29439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408180/normal_5f9bf53b873ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_5f9a90fb851a8.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/348c1587-a109-46c1-9bfc-ec9388055775/70960589887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6109/9675/files/quadratic_equation_by_completing_the_square_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/ocean_state_job_lot_lafayette_road_seabrook_nh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/6386/6054/files/82886877161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3572/0358/files/cadette_animal_helpers_badge_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/58911717694.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_off00006687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6687 5736 bytes
SHA-256: fac72b2db13944ba583b2ea2c837f995de71a3f33d807b765cbadf6433f0cdd1
font_01_sfnt_off000079f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F6 10388 bytes
SHA-256: 8e785813abdd28f12ac546c2beff6eae150ee28514e0ab767341cc2c58252f77

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