Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d177857887d736a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-31 23:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d00a344806b19081b872ff56a354fab SHA-1: 24fa40bc367b3f223ec3c7d3fa6e8f6b1523a3b3 SHA-256: 2d177857887d736ace0f6402e4b703b1d7dd892549dcb8c4415354435cc35868
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=bittorrent++movies+for+mac', suggesting a lure to trick users into clicking on a malicious link. The heuristic firings confirm the presence of a malicious redirector link and a link farm within the PDF.

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.com/wix?keyword=bittorrent++movies+for+mac
    • https://cdn.shopify.com/s/files/1/0435/1839/4523/files/wawap.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/38150244373.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/auditoria_externa_ejemplo.pdf
    • https://static.usrfiles.com/ugd/0047a4_cde76b31adf54cd193e674fa119b1b53.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/sovovewivanijof.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/75805971204.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1476/files/98029716657.pdf
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/sejarah_benteng_vredeburg.pdf
    • https://cdn.shopify.com/s/files/1/0435/9664/4511/files/daily_planner_2019_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/applied_mergers_and_acquisitions_bruner.pdf
    • https://cdn.shopify.com/s/files/1/0448/3540/5985/files/how_to_calculate_capacitor_bank_rating.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_off00005fba.bin
f16acfe67f4f8434492fc9e8fc5d2937ed9f6497fee4f93b81b14c6327500b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 5104 bytes
font_01_sfnt_off00007108.bin
037ae9b45b80fd9a39b74399fa86e2f025e846b524d429bbb5acdb99df372b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7108 10900 bytes

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