Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab40cde7f14315da…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 00:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a97d92abf375be5518f632b323e8bdbc SHA-1: 83bbd3672ca47a023139526ee38a88be869db2b1 SHA-256: ab40cde7f14315dacfd6d2013364a63c912342a6a177cf34bd8f8a21405bd02c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=contract+template+word+doc'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed to obscure the true destination. The ML classifier also strongly flagged this PDF as malicious.

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=contract+template+word+doc
    • http://files.thedivadogs.com/uploads/1/3/0/9/130970004/bufexetizidewalowo.pdf
    • http://neneweki.makeasmartstart.com/uploads/1/3/0/8/130873927/talatifajuwevinez.pdf
    • http://jisurojid.paintedridgerabbitry.com/uploads/1/3/1/4/131453624/4415408.pdf
    • http://zadogazi.oaswcde.org/uploads/1/3/0/8/130874254/87777.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/color_code_excel_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/30519353562.pdf
    • https://cdn.shopify.com/s/files/1/0451/3821/5066/files/zisebikujosovonan.pdf
    • https://cdn.shopify.com/s/files/1/0436/4481/3470/files/9743216237.pdf
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/47719628000.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/license_plate_recognition_technology.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/83216504191.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/40411005315.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/cctv5.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_off00006065.bin
a2c53d0423c4edb9908a82b4242a60623dfddf8a99ac96b5baa4f3599f342db2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6065 4896 bytes
font_01_sfnt_off000070fd.bin
44c8ca521515281c2b71a7926cec7e171a6ce03498a02c5568f612098642e93b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FD 9884 bytes
font_02_sfnt_off000092cf.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92CF 4324 bytes

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