Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1ba6a099703f60…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 02:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86fbc4e8d5c23edb503ebeada8108540 SHA-1: 88a1833de0fd15d5f179d4d116feace4ef1a0f96 SHA-256: ea1ba6a099703f604f5dd16d082f4e58af03510649ae53c903cece8731b79ca1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a link farm hosted on Shopify, designed to appear as legitimate academic documents. The primary malicious link, https://ttraff.ru/pify?keyword=gate+2020+aerospace+syllabus+pdf, is identified as a redirector to malicious infrastructure. This suggests the document's purpose is to distribute further malicious content or conduct phishing by luring users through deceptive academic lures.

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=gate+2020+aerospace+syllabus+pdf
    • http://nogal.burningswordsmenstudio.com/uploads/1/3/2/6/132681579/e90ff5e51119.pdf
    • http://fepedesul.talentlessandoptimistic.co.uk/uploads/1/3/1/4/131438096/b3e1427bc.pdf
    • http://files.hollywoodlandpod.com/uploads/1/3/1/3/131398143/de2c65b29d1e69.pdf
    • http://birukowiz.sierissa.com/uploads/1/3/0/8/130874038/duxapuba-negogizir-digibaj.pdf
    • http://files.uhbands.org/uploads/1/3/1/1/131164573/669142.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/41291345303.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/70781784805.pdf
    • https://cdn.shopify.com/s/files/1/0439/6980/6494/files/xerobibuxolibamuxoduw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7118/3777/files/grammar_test_for_grade_9_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/vesipitopav.pdf
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/ganovenigelesexonu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/35937112697.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/maxtor_external_hard_drive.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/agriculture_statistics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/ciencias_naturales_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/tulamonologolazorabo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/antibioticos_veterinaria.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_off00006d7d.bin
3f9479c7c79ce08fc7593725ddb72887bbdfcc14e50b7e582db9597f20cd7535
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 5696 bytes
font_01_sfnt_off000080f5.bin
6117a8fbae0cc6b0ead2bf09b369732c776673358f8bfba441e5cbb8cb7b0a84
pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 10700 bytes