Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c06d133cc9f144f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 01:39:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bb332f27ef8fbf5c722c740b0c66dda SHA-1: d25b60646643f1e1f00386b0461652692fbb13f9 SHA-256: 3c06d133cc9f144fa57f4450e07134ac8c5a9873cc85bbf403de5f139ed258bb
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link directs to a known malicious redirector at ttraff.ru. This indicates a phishing or redirection attempt. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

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=ce+technical+file+example+pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • http://files.mindmeltgames.com/uploads/1/3/1/4/131453990/5178484.pdf
    • http://files.fadihannaimmigration.com/uploads/1/3/1/4/131408209/1502173.pdf
    • http://files.clothdiaperdepotusa.com/uploads/1/3/0/9/130968934/tibapizazuja-goges-livasef.pdf
    • http://lopema.grantsofsomerset.co.uk/uploads/1/3/1/8/131856772/9138787.pdf
    • https://cdn.shopify.com/s/files/1/0435/5463/5937/files/hematology_test_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/luwixokav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/kern_interventional_cardiology_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/pesedeso.pdf
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/cbse_date_sheet_2020-_21_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/fadolijomitozod.pdf
    • https://cdn.shopify.com/s/files/1/0437/6539/9713/files/xuniwajagadizilesitunudef.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/teaching_job_application_letter.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/98899509896.pdf
    • https://cdn.shopify.com/s/files/1/0439/1033/2571/files/86179253800.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/caracteristicas_del_temperamento_sanguineo.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/joxugagasewule.pdf
    • https://cdn.shopify.com/s/files/1/0434/1543/7468/files/75734067758.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/types_of_asexual_propagation.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/1/0435/0961

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000604e.bin
859eace5d447e4f5c2804ffef87bf7522b0d88aec9b4eb6d752ff4032c67f863
pdf-font-stream PDF embedded font (sfnt) at offset 0x604E 5096 bytes
font_01_sfnt_off00007177.bin
ce518290424b120ac04720a26c7971f340ef271f08f4d8abd051a61209b63582
pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 9872 bytes