Malicious PDF — malware analysis report

Static analysis result for SHA-256 2075bd61b707cf9b…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 20:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2a6f96f44da371aae03704e0480b7f1 SHA-1: 3c4f575ed5886ea59a590d9c07996eec30efd8a3 SHA-256: 2075bd61b707cf9b5c7fa6e5551411b5e33818f1fd29f1017b2aad266f1effaf
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for a bus schedule. The PDF also features a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse. The ML classifier strongly indicated maliciousness, and the primary URL is a known redirector.

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.com/pify?keyword=119+bus+schedule+nj+transit+pdf
    • http://files.nicoleedwardsauthor.com/uploads/1/3/1/6/131637056/bibogagip_vobinitinaju_fejifan_soretifela.pdf
    • http://files.qualitytutoringservices.com/uploads/1/3/1/3/131380308/mopozexasepugatusag.pdf
    • http://files.dontbeacrashtestdummy.com/uploads/1/3/1/4/131454207/lufojilutedozon-govonibi.pdf
    • http://files.baguanyc.com/uploads/1/3/1/4/131406104/3411093.pdf
    • http://files.reanalysts.net/uploads/1/3/0/7/130775286/ritavaxofibalo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1427/3693/files/kazurofotokip.pdf
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/81333574075.pdf
    • https://cdn.shopify.com/s/files/1/0432/7001/3086/files/69987580742.pdf
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/free_psp_themes.pdf
    • https://cdn.shopify.com/s/files/1/0437/9944/5664/files/batch_manufacturing_record_sample.pdf
    • https://cdn.shopify.com/s/files/1/0440/4979/3174/files/2624631750.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/snake_bite_management_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5316/files/haynes_auto_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/denoxat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/44346554238.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/darksiders_2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/mejazetolewuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/pillars_of_eternity_lord_byrnwigar.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/
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/pillars_of_eternity_lord_byrnwigar

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007789.bin
30faa521fbc0cd7281d0195d2ac1c0f976db67a8d37700b86fc059be713815a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7789 5572 bytes
font_01_sfnt_off00008a73.bin
e5eb4061babb0f8bdb0f475fe0a58707a176c12ba4404bd714416bef7ae6f918
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A73 10956 bytes