Malicious PDF — malware analysis report

Static analysis result for SHA-256 317e454c22cf730d…

MALICIOUS

PDF

45.9 KB Created: 2020-07-08 23:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff9e4fdd955dc44882e0d152016aa285 SHA-1: 408021dd9865e8e611e153cf1c629701a7cdf918 SHA-256: 317e454c22cf730d12eb53219de3edb74ae7887a825c8699527f27d87e2884c8
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 to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. One of the primary links directs to 'ttraff.com', a known malicious redirector. The document body itself contains obfuscated text and URLs, further supporting the malicious intent. No scripts were extracted, but the extensive link farm and the redirector URL are strong indicators of malicious activity.

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/wb?keyword=libreoffice%20writer%20save%20to%20pdf
    • http://files.12monthbeauty.com/uploads/1/3/0/8/130874128/6301925.pdf
    • http://files.bioenergeticsberlin.com/uploads/1/3/1/4/131406108/zukajudokinaniramobi.pdf
    • http://files.andreanelson.studio/uploads/1/3/1/8/131871690/b02bc.pdf
    • http://files.nataliajdonofrio.net/uploads/1/3/0/7/130776567/1740773.pdf
    • http://files.superiormachineandfab.com/uploads/1/3/2/8/132815154/5810631.pdf
    • http://files.miscellaneous-music.com/uploads/1/3/2/6/132682565/wevotozitaj-mibebulajupabiz.pdf
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131454109/banij.pdf
    • http://files.victoriaesquivel.com/uploads/1/3/0/7/130775275/kigevaxevexezomamogo.pdf
    • http://files.goodstuffprimaryresources.com/uploads/1/3/2/6/132681204/lamumolop.pdf
    • https://rufibirel.files.wordpress.com/2020/07/botinepuwumusewesosuwum.pdf
    • https://piwedun.files.wordpress.com/2020/07/nadamaregitodi.pdf
    • https://walevugojew.files.wordpress.com/2020/07/jivaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nejoxalivivurotuzepebibus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.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_off00007808.bin
9f09b5efb1d8235e5e6ea3b1a2d6653c6518a05f8ca6c9230e4e010485debd11
pdf-font-stream PDF embedded font (sfnt) at offset 0x7808 5032 bytes
font_01_sfnt_off00008946.bin
88aa61b834bc7ed217a07818b9e92f82ec73c96ffe1f8eb4d7cc90a3fac29dcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8946 9732 bytes