Malicious PDF — malware analysis report

Static analysis result for SHA-256 75edd66ba103c8c8…

MALICIOUS

PDF

34.2 KB Created: 2020-09-01 04:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6da64096801298ba11ce847fe12d45f SHA-1: eeab59999bcf12e22445824ebb698d7423c66991 SHA-256: 75edd66ba103c8c8b9e4471a048a2b0881ee21201746b43e7efdebbfad50618b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one prominent URL leading to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'political cartoon analysis' and the malicious URL, suggesting a lure. The presence of many external links, including to Shopify, indicates a link farm or SEO poisoning attempt 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://ttraff.com/wix?keyword=political+cartoon+analysis+andrew+jackson+answers
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/5014/5704/files/nexirera.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/974695148.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/ielts_reading_test_1_book_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/xuxapirabijulivinutirezet.pdf
    • https://static.usrfiles.com/ugd/b8c837_e57810900aa64e4c94ebf406672e2a70.pdf
    • https://static.usrfiles.com/ugd/760101_bccd953cf52d41489922f24b73ccad16.pdf
    • https://static.usrfiles.com/ugd/b8c837_53e8f6c744ad4c91b07e0a08e93016c5.pdf
    • https://static.usrfiles.com/ugd/fa6f14_50dd8bc4032c4de78377b3ce8189bdc4.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/cisco_router_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/tapiwivavo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/marketing_research_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/10872041596.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/biostatistics_wayne_daniel_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/73205219320.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/96344578294.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_off000048ca.bin
265605b31c3fad47653dfe77df076a101227484ddbd0c34819e12bbef2cfe31f
pdf-font-stream PDF embedded font (sfnt) at offset 0x48CA 5268 bytes
font_01_sfnt_off00005ade.bin
f6126cd4c1aa08dc48e9579f06f76d168e30fd33bc5af55d7444c823b6fbbe49
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADE 9484 bytes