Malicious PDF — malware analysis report

Static analysis result for SHA-256 64768ebcad6f9320…

MALICIOUS

PDF

42.4 KB Created: 2020-08-15 03:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2b39231cf28c8993715aa63afa8eff7 SHA-1: e35d747f8a62a2d1a1e76ac6b352d3926e08643e SHA-256: 64768ebcad6f9320e0da058997f58b40e3a999fb1d86263b4c2fe11492bdbd36
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting it is a revision guide, likely a lure to encourage users to click the malicious link. The presence of many external links points to a link farm strategy, potentially for SEO manipulation or distributing further malicious content.

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/pify?keyword=edexcel+a+level+physics+revision+guide
    • http://files.blossomsbygeorgia.com/uploads/1/3/1/4/131410952/dogiluwu-ruzuri-wiwoxa.pdf
    • http://xupalatax.fidostudio.com/uploads/1/3/2/7/132710507/381a4.pdf
    • http://files.printsolutions.info/uploads/1/3/1/3/131379301/5803439.pdf
    • http://files.happypositivesuccessful.com/uploads/1/3/0/7/130738969/mofarobosedibogifaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/49964418464.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/paruwigub.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0919/files/medical_bills_on_credit_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/67139380201.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/72020294677.pdf
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/79748366509.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/67408798075.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/infographic_template_powerpoint_a4.pdf
    • https://cdn.shopify.com/s/files/1/0437/4488/6936/files/understanding_and_using_english_grammar_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/8692340512.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/virtualbox_shared_folder.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6846/files/average_value_calculus_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006639.bin
e436101004047f2371f8b79c484257a8e7de64a1667dee114f6e4ee889829e00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 5524 bytes
font_01_sfnt_off00007904.bin
37870ea2741a164c58432c9b647deb480313bc636624dcf6a2e252bef1e260b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7904 10320 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.