Malicious PDF — malware analysis report

Static analysis result for SHA-256 515f01d3fbe79487…

MALICIOUS

PDF

67.8 KB Created: 2020-08-12 22:21:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4e9dfa1e252916d40b636fee5a4153a SHA-1: d8eb8a27cf0441564a806076a37916abc8038c7a SHA-256: 515f01d3fbe79487430e5f3c14ddb37d9fb0fe0fb733591d0b0497f0fdeed669
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Anglo american platinum limited integrated report 2020 pdf' and a URL that appears to be a redirector. This indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=anglo+american+platinum+limited+integrated+report+2020+pdf
    • http://files.miriamruberlartist.com/uploads/1/3/1/4/131483019/828517e6fc26dc2.pdf
    • http://files.darbybooks.com/uploads/1/3/0/8/130814636/7dd96.pdf
    • http://files.freshcaandco.com/uploads/1/3/1/1/131164472/zimasitoxuvat.pdf
    • http://ludidafun.allskillsenglish.com/uploads/1/3/0/7/130776783/sevijos.pdf
    • https://cdn.shopify.com/s/files/1/0438/3640/7973/files/confusing_adjectives_and_adverbs.pdf
    • https://cdn.shopify.com/s/files/1/0440/3567/0166/files/tumobuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/56396613829.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/kijavikorisevi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/rusifadodap.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/remote_controlled_john_deere.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/rovamazatomunagowan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/49657769151.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/kunonekurixowilinula.pdf
    • https://cdn.shopify.com/s/files/1/0452/5981/7117/files/94830671403.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c18d.bin
6966b2efd5281b0df6191de8382a967bd83b30d20bdf02db15a64d8cc4c24dd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC18D 5560 bytes
font_01_sfnt_off0000d458.bin
a408796fc4e31fdbe88860930e5d0112267fb6e27ea215d170390fdc89d11811		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD458 14688 bytes

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