Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3234bdf291e4d63…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 17:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ef92747a539246abdde48955b432d0 SHA-1: 3ad07adc43acf8834a46aed322f5b76e458a899f SHA-256: b3234bdf291e4d633f958ff4175753d05e5b070c26b1035b010030476bc4e533
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.ru/pify?keyword=catalogo+4+avon+2020+pdf. The document body, though heavily obfuscated, contains references to the same catalog lure. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to obscure the malicious redirector by blending it with seemingly benign content.

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.ru/pify?keyword=catalogo+4+avon+2020+pdf
    • http://files.agbcontracting.com/uploads/1/3/2/7/132712514/2125422.pdf
    • http://files.portageresourceguide.com/uploads/1/3/1/6/131606644/8719065.pdf
    • http://files.oceannotions.com/uploads/1/3/1/6/131606111/4187579.pdf
    • http://files.richardmichellepentelbury.com/uploads/1/3/1/3/131379709/6027511.pdf
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/28077103442.pdf
    • https://cdn.shopify.com/s/files/1/0430/8353/0407/files/wenaxos.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/wezeveluvatosekatunubedi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/isabel_allende_libros_paula.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/mujowimizureratosusi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/fallout_76_perk_chart.pdf
    • https://cdn.shopify.com/s/files/1/0437/5796/1374/files/fairy_tail_213_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/intellicast_beulah_michigan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdf
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/57798371344.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/8895663945.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/weloloru.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/suvudexotolizuwejusala.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/pufutit.pdf
    • https://cdn.shopify.com/s/files/1/0440/6181/9045/files/creative_writing_exercises_for_beginners.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d72.bin
cb6096ae907fb4a0bf2839413d6d3c40961f8b08fff2ec75580ac14cc3e505d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D72 5004 bytes
font_01_sfnt_off00006e99.bin
6cea977755bf50aa2e17aaefa60f2942c33cc65df67670bcb990b6c2864290e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E99 10904 bytes
font_02_sfnt_off0000938c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x938C 4324 bytes