Malicious PDF — malware analysis report

Static analysis result for SHA-256 91c23f91be9de565…

MALICIOUS

PDF

54.3 KB Created: 2020-08-19 18:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a8a9fad9aaa70fd2fb6748da02a1df SHA-1: 9dd60fe28b1911ec3d877ccce51e08bc5941317b SHA-256: 91c23f91be9de5658d21b257bff8993d113ebc835c4835bcf1f56d3f02c1eea0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=badland+5000+winch+manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the text 'Badland 5000 winch manual', suggesting a lure to disguise the malicious intent. The primary attack pattern involves tricking the user into clicking the malicious link, likely leading to a phishing page or malware download.

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=badland+5000+winch+manual
    • http://nowev.lilyandlous.com/uploads/1/3/1/1/131164250/8ff8c97.pdf
    • http://files.overcastvapors.com/uploads/1/3/1/3/131381259/jakewatezawajak.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/65085393636.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9352/files/valotipodagibojov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/52691896760.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/fesetabix.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/social_psychology_elliot_aronson_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3785/7691/files/solving_single_variable_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/bandos_osrs_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/paxokopuwonofutuwabavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/tesun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0739/3435/files/36069390887.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/79376809595.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.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/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000097ec.bin
cfa9c8e13174fdcc9477a03efbce92ad601f5572809b64b512a8c23c182c633d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97EC 5312 bytes
font_01_sfnt_off0000a9dd.bin
30ade81403bb884e3d24bfb0e69c3a8fdb2a8bc8eec0168059aa5ad3f55276d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9DD 10088 bytes

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