Malicious PDF — malware analysis report

Static analysis result for SHA-256 93bbdd53d20be4ab…

MALICIOUS

PDF

41.1 KB Created: 2020-08-26 21:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50d68ef72480f93d355deb9e61d8ca4f SHA-1: e919bc16c72f6eb3deaaed5e79131055717ddab6 SHA-256: 93bbdd53d20be4abfe8ed019528aa14f43f5080097af6c558747b62d8389c393
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.com/pify?keyword=acer+aspire+one+kav60+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the Acer Aspire One laptop manual, suggesting a lure to trick users into clicking the malicious link.

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=acer+aspire+one+kav60+manual
    • http://files.pierreartista.com/uploads/1/3/0/9/130969986/zonod.pdf
    • http://files.gappify.com/uploads/1/3/1/4/131437330/jekajulas-kidezur.pdf
    • http://jepesu.saaea.org/uploads/1/3/0/8/130814935/naroda-gizoteko-garobej-gebefaduwojo.pdf
    • http://zetuw.outlawactionsports.com/uploads/1/3/1/3/131398560/d82ff40563ab.pdf
    • http://jisoni.serbianheritageacademyofcanada.ca/uploads/1/3/1/4/131453247/nobetisulim-turibomaxadef-bawapatof.pdf
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/2569337279.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/46419344500.pdf
    • https://cdn.shopify.com/s/files/1/0435/4224/9621/files/neversinks_tornado_shot.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/remolaweder.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7587/files/9487941803.pdf
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/zezuxatafetusiwuzuzama.pdf
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/free_movies_websites_name.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0464/8859/files/wondershare_data_recovery_software_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/maternity_leave_letter.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/549906331.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_off00005be0.bin
b6ac10533cb4e12fd7649efc0f837813f5103bfa78eb7d6140dc6d4a431d6102		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE0 5488 bytes
font_01_sfnt_off00006e72.bin
8d793908c7be7b766959161ebb7f96f6dafb5252d54c9dced8c79bc90fdc51b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 12036 bytes

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