Malicious PDF — malware analysis report

Static analysis result for SHA-256 b058887dabf71f14…

MALICIOUS

PDF

40.6 KB Created: 2020-08-10 13:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 541bf75cb6c63d907efb8cde5b2a1566 SHA-1: e99cfae1d337fcb40dbbbb525d9bbed74234abe8 SHA-256: b058887dabf71f14100317bbbb777b58e5fb719244bc2ceb497a534cc07799f1
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at "https://ttraff.com/pify?keyword=marvelous+designer+8+manual+pdf". The document body, though heavily obfuscated, contains text suggesting it is masquerading as a manual, likely to trick users into clicking the malicious link. The presence of numerous external PDF links also indicates a link farm strategy, potentially for SEO poisoning or to obscure the final malicious destination.

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/pify?keyword=marvelous+designer+8+manual+pdf
    • http://mefezu.yoansewingstudio.com/uploads/1/3/1/0/131070722/5308220.pdf
    • http://files.stephanie-hixon.com/uploads/1/3/0/8/130813829/9332440.pdf
    • http://lovosoj.proteus-mrighifu.net/uploads/1/3/0/8/130814297/nobimojebi_dodawesamolida.pdf
    • http://felagu.mtpskitchengarden.com.au/uploads/1/3/0/8/130874359/zutudofikigojogug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/17739774923.pdf
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/silabus_osn_biologi_sma.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/daponinimeluzewisoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6051/files/les_antidotes_des_mdicaments.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/kirchhoff_s_first_law.pdf
    • https://cdn.shopify.com/s/files/1/0428/5834/8703/files/75119487124.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4885/files/jakolefix.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/72859357535.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/29723985270.pdf
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/dixusoledupogexadakuxowom.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_off00006140.bin
4e2c8fa9f55ddabf1906ce69de9782f7a7d2630fac115fcde98745d7ef06af92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 5620 bytes
font_01_sfnt_off0000745c.bin
2ea209275fb06b26b36729f5dad89b6dd5efe25f3ffd888a3df51174dc25c09e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 9812 bytes

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