Malicious PDF — malware analysis report

Static analysis result for SHA-256 e020389b0a035125…

MALICIOUS

PDF

40.7 KB Created: 2020-08-01 17:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 794e1bdcf76699e25bf01c9b4c3ebe54 SHA-1: 074d897a412bc12ef54dfd12a51e76d44e31be18 SHA-256: e020389b0a035125ee75f79bb7fd4c93bd51fdeabf230806bda9fc5a10fdb11d
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with text related to "Navy nonresident training courses". The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The primary malicious intent appears to be directing users to the ttraff.com redirector.

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=navy+nonresident+training+courses
    • http://files.chineitsangnow.com/uploads/1/3/1/8/131871433/voxovunavemibajex.pdf
    • http://files.youthvoicesandiego.com/uploads/1/3/1/4/131438557/xatuwawuwu.pdf
    • http://files.wallaroocampinghire.com/uploads/1/3/1/1/131163856/wetujiwadewep-nolafinodaje-sawosal-vewexebo.pdf
    • http://files.stanielrentals.com/uploads/1/3/0/7/130775448/jegedeluj-xebedezigutawiw.pdf
    • http://files.kbnworkspace.com/uploads/1/3/2/7/132740214/tabula-polova-nasafiminuw-zijutanonasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/46065514205.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/kolubuki.pdf
    • https://cdn.shopify.com/s/files/1/0434/6527/7605/files/38070962446.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/4864213437.pdf
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/zuraziwixagikoxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/49511574363.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/fezurabujomukesonivoxoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/vazitun.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/7746868496.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/wexiru.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/nimor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/73772382512.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/smf_to_hnl.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_off000060b6.bin
a84658a9cd260cea3c7effb09c134d1789bc09ca54d8478abd77440b688e0eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 5208 bytes
font_01_sfnt_off00007291.bin
37f128c2c5399baf65436fc8c2173c7bd7e7c835fc18d13a583a3d78bcfa1e95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 10256 bytes

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