Malicious PDF — malware analysis report

Static analysis result for SHA-256 5580aa3788a25273…

MALICIOUS

PDF

45.8 KB Created: 2020-09-20 13:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c2ee9931a03d46277ba444b2db13ff3b SHA-1: 08d9bd87fe33516d3683d1eeed16328215c6ab79 SHA-256: 5580aa3788a25273c3d2ddd3c020cd393fcaf5e8df2639d6fdb744d140f80125
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to known malicious redirector infrastructure or are part of a link farm designed to manipulate search engine results. The primary malicious link identified is https://ttraff.com/wix?keyword=little+tikes+storybook+cottage+twin+bed+replacement+parts, which is likely used to redirect users to further malicious content. The document's structure and the presence of numerous links suggest an attempt to lure users into clicking on malicious URLs, potentially for phishing or malware distribution.

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/wix?keyword=little+tikes+storybook+cottage+twin+bed+replacement+parts In PDF document text
    • http://buzosan.supremespeech.com/uploads/1/3/1/3/131383493/xokofaderomotasu.pdfIn PDF document text
    • http://files.patrickracingbillet.com/uploads/1/3/1/4/131413678/2694597.pdfIn PDF document text
    • http://files.earthcraftpermaculture.com/uploads/1/3/1/3/131398139/gevimolosima.pdfIn PDF document text
    • http://xuwodasus.bleuprinthairstudio.com/uploads/1/3/1/8/131857243/8876741.pdfIn PDF document text
    • http://files.mrsbscusd.com/uploads/1/3/1/4/131407155/zonutidigobi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9e5e94d8-c7b0-4c67-b30d-483011d45753.filesusr.com/ugd/9aab09_78e7daf49f044b739a5ccc6a5d1ab59e.pdf?index=trueIn PDF document text
    • https://ca0902ce-2d06-4aac-86ba-51f182211547.filesusr.com/ugd/f1780b_48ec5266db1843f7ba534db76b190b72.pdf?index=trueIn PDF document text
    • https://2751922f-3146-4ed2-819a-ded1ae2b326d.filesusr.com/ugd/f46427_53683baa89f44c0aac0e6fa6803eb680.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/adorlee_sheet_mask_lavender.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/comcast_dns_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/jijemewad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8259/3957/files/baadshaho_trailer_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7877/0848/files/spiritual_guide_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5211/3820/files/43487610277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/65542756804.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_off0000726d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 5732 bytes
SHA-256: 1172a11d9f2aedbb371988ddab434fc8676de33e2af7e06213da8d855618dc8c
font_01_sfnt_off000085f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F8 10568 bytes
SHA-256: 02bf024b969f29352f72cb83b57018da23fbdb4d796a3a26a0373451a9fe88e2

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