Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb1bd408ac84487…

MALICIOUS

PDF

51.1 KB Created: 2020-08-25 05:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c134252e99d63de16fb5c020c5254299 SHA-1: 0b96b3f8b11e26935f34a0015dff8b71e8f53af7 SHA-256: 7eb1bd408ac84487a6fbdc098b5866f3eeae797c9f3b7af601167d839b8c8f8a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=brochure+templates+free'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also contains a large number of external links, many of which are hosted on Shopify, potentially as part of a link farm to improve search engine ranking for malicious content. 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.cc/pify?keyword=brochure+templates+free
    • http://files.amwellvalleyhounds.org/uploads/1/3/2/6/132681153/muledezesil-kowuf.pdf
    • http://kulizer.linguafrancainstitute.com/uploads/1/3/2/3/132302780/xidimifesi-narijezixiran-wejeto.pdf
    • http://wuwerewur.davetanproperty.com/uploads/1/3/0/8/130874431/sotiga-wukufizarodekop-poropozu.pdf
    • http://siweb.carolmeadsart.com/uploads/1/3/1/4/131453960/40bac6d1884291b.pdf
    • http://wukafafug.kruegervp.com/uploads/1/3/1/4/131454165/tupilivaxoramisekilo.pdf
    • https://cdn.shopify.com/s/files/1/0457/7578/2054/files/staying_safe_at_home_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/19890796059.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/nibomifobepumugovoxi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9238/1589/files/82629161783.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/bellower_guide_raid_shadow_legends.pdf
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/21565031501.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8664/files/porefatopojaxane.pdf
    • https://cdn.shopify.com/s/files/1/0431/4474/1015/files/accountant_cv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/business_case_analysis_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/6488/4384/files/radios_at_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/gobilewu.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_off0000894e.bin
7d2d8e66a0d7feba9489ecf1cfa8be7fe227be043c22735f74a32bf617b0e353
pdf-font-stream PDF embedded font (sfnt) at offset 0x894E 5304 bytes
font_01_sfnt_off00009b32.bin
d9fa9babf415a1454e478f457d75f42a9a7a810634cb95f33428e2ec1cb90d73
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B32 10544 bytes