Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f96b75cdd8311de…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 02:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 645c21744c28163512f625d6b949e957 SHA-1: 828fd2ee54ddd60de77c4b07d2bc5b564d3f634e SHA-256: 1f96b75cdd8311deee57a87a67b9e9a15aadd1098d66d208c0933290bd7d5737
120 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, pointing to 'https://ttraff.cc/pify?keyword=interview+skills+videos+free'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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.cc/pify?keyword=interview+skills+videos+free
    • http://files.cecilymckeown.com/uploads/1/3/2/6/132681356/2440326.pdf
    • http://rijewadip.mykwalk.com/uploads/1/3/1/4/131407406/satamuxamovosemoma.pdf
    • http://files.washingtonactivities.com/uploads/1/3/0/9/130969206/8540930.pdf
    • https://cdn.shopify.com/s/files/1/0448/1266/4989/files/python_curses_examples.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/40154220430.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/10620128760.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3295/files/aswamedham_telugu_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/2817_windridge_drive_acworth_ga_30102.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/project_report_on_financial_performance_analysis_of_a_company.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/41004649559.pdf
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/49621519668.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/suzipexopawasoxilaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.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_off00006f37.bin
e7ca71b8284eedaf1b5408956f2c21f20c0c9f573b5156fac5590a02a3ab8833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 4844 bytes
font_01_sfnt_off00007fd6.bin
1b8783828146c1e1b1762553caca3ff6f2971cad89f784b37c42858a81de9227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD6 10132 bytes

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