Malicious PDF — malware analysis report

Static analysis result for SHA-256 413148a4b02e1d5a…

MALICIOUS

PDF

63.6 KB Created: 2020-08-21 10:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 760332393a89b512750dffaafee7f7fb SHA-1: 864d77cdbcbeeec11ddb244512c105d879b72da3 SHA-256: 413148a4b02e1d5a511d9d2a56dc688178e11b7da80ba2ac8ee6540d2770a2a3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs, indicating a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=collagen+synthesis+pathway+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing information.

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=collagen+synthesis+pathway+pdf
    • http://gajefob.homesinnorthwestarkansas.com/uploads/1/3/1/6/131636725/sesaduralezibaludixe.pdf
    • http://files.gospaslavender.com/uploads/1/3/1/6/131636655/6343634.pdf
    • http://konufuvo.pbc-alliance.com/uploads/1/3/0/7/130739206/8773034.pdf
    • http://wusalab.spikejamesandthenames.com/uploads/1/3/1/4/131454762/xubevekuximotew.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/56615947559.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/rules_of_chess_game.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/blagues_droles_courtes.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/loliramipufuxipike.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/94994672169.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/30188149976.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/mogekolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/57038862082.pdf
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/assembler_avec_foxit.pdf
    • https://cdn.shopify.com/s/files/1/0435/7298/6015/files/wexobejadunirazovefupewo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2744/6435/files/little_alchemy_horse.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_off0000a6a8.bin
eda7ce86d35e44d1ed17b57ec344c657267c93ec004bccdfbd7b81dffcabc448		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A8 5304 bytes
font_01_sfnt_off0000b8cd.bin
e1dd3e677eb65f15db2db899cda014ed9b9f1603188e8c50db06b48e27b2e81b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CD 10208 bytes
font_02_sfnt_off0000dbd9.bin
49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD9 16148 bytes

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