Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1735f77a9e6b5e0…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 19:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70444443697888f47c895deb317d79b0 SHA-1: 3a1eea8a21c0e06d8ecc7ed88ce340925d3e78cd SHA-256: f1735f77a9e6b5e0b83cf112efadac658b015f8b775d06f5c9d8425d5c4337fd
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'hk1 max android 9. 1 tv box' and includes the malicious URL. This suggests a phishing or scam attempt where the user is lured by a seemingly relevant topic to click on a link that leads to malicious infrastructure.

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=hk1+max+android+9.+1+tv+box
    • http://maraniz.bhymca.org/uploads/1/3/0/9/130969060/0f9a5972bfd03a.pdf
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/baboviguvigijofabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/air_bearing_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/27200448035.pdf
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/personal_statement_for_university_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/48290109070.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/antigen_presenting_cells.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/gedagu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/gadokikimezutejegevuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/convert_string_to_list_python.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5515/files/agenda_mercantil_2020_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/vubupit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/23441964605.pdf
    • https://cdn.shopify.com/s/files/1/0434/8238/2502/files/95450383171.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_off00005554.bin
69e195a82a3fc85363170665a3114857d77ec3e267f8487598e581d25b22f8bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5554 5292 bytes
font_01_sfnt_off00006745.bin
b57251c611277c969c77028dae5ae093cfc7c38a224b020dbae9920ce0b39fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6745 10428 bytes
font_02_sfnt_off00008b2f.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 16144 bytes

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