Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab02f9dbdb7030ad…

MALICIOUS

PDF

34.9 KB Created: 2020-08-30 01:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a13a4cddd07f1848072d2df62981680a SHA-1: d3d317c712cfbfbfe13b7c33d5e9bee88f2951ec SHA-256: ab02f9dbdb7030ad386cc27875c596b001f17a11858d3feff4015b5274948326
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=fear+3+t%25C3%25BCrk%25C3%25A7e+yama'. The presence of a large number of external links, many hosted on cdn.shopify.com, suggests an attempt to manipulate search engine results or distribute content through a wide network of seemingly benign sites, ultimately leading to malicious destinations.

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.ru/wix?keyword=fear+3+t%25C3%25BCrk%25C3%25A7e+yama
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/21494016324.pdf
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/48912961852.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/entrepreneurship_development_small_business_enterprises_charantimath_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/panther_tanks_in_action.pdf
    • https://cdn.shopify.com/s/files/1/0450/8686/7621/files/5955951442.pdf
    • https://static.usrfiles.com/ugd/07ef24_c86ca42687ee42019c259247b5ee176d.pdf
    • https://static.usrfiles.com/ugd/b8c837_6320e2f996a340a7b011770f1914bdc7.pdf
    • https://static.usrfiles.com/ugd/79cb75_2f8963dc62734b8e9464edc868e0ac1a.pdf
    • https://cdn.shopify.com/s/files/1/0432/4959/8632/files/tesunawakibibegivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/bsc_1st_year_zoology_practical_book_in_english.pdf
    • https://static.usrfiles.com/ugd/b8c837_161e9df514844edc94130f2413941bc1.pdf
    • https://static.usrfiles.com/ugd/3f80ec_242032b1a8394e5b8d9ef4da6bdc1575.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_off00004696.bin
3b4f59e7b0cc136617f2dda5f15a693e8fa426fa05603a129602475870f2f614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4696 5208 bytes
font_01_sfnt_off0000581a.bin
1d3aaf8d173119d9c61ba6a1771d5e794e4f2f13082dbecca873d9f6144833c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581A 11916 bytes

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