Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d0870f9ca64017…

MALICIOUS

PDF

46.1 KB Created: 2020-08-19 19:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f489e4d59770a719b23f4b5ccc26310 SHA-1: 06ab59315ac129fcda8962b548066b3f3150afde SHA-256: 95d0870f9ca640176c7e7d86f0234d50f295f42666fe095523e852d1042bbfa0
130 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body, though heavily obfuscated, contains the same lure text and URLs. The primary malicious URL, https://ttraff.com/pify?keyword=baby+dance+videos+in+tamil+free, is a known redirector. The file also hosts a large number of external PDF links, many pointing to shopify.com, likely as part of an SEO link farm to improve search engine ranking for the malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=baby+dance+videos+in+tamil+free
    • http://files.henrytyrrell.co.uk/uploads/1/3/0/8/130873708/tudatamem.pdf
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/16515466215.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/maxuvusawogip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/barron_toeic_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5883/9198/files/zuvoverexonasetofoji.pdf
    • https://cdn.shopify.com/s/files/1/0436/1201/2701/files/65180504419.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/navumelafutuzorixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/dasululudidud.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/83249921009.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/amumu_support_build.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_off000076ea.bin
9c187419120e765c9c08faabd97d652893fc05d0b99896f6e8ecf2ca29c6b747		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76EA 5516 bytes
font_01_sfnt_off00008993.bin
7d3fd0d359cfb5ccdddb12a7a554b6a5fa4a9ba16d833293d766507844535fdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8993 10060 bytes

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