Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e514fdaf3b35e88…

MALICIOUS

PDF

38.6 KB Created: 2020-08-06 12:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca41da9c87daff96106bfb5665cbae2 SHA-1: de5c959d30537587afb5b5915d6133ea80a5485c SHA-256: 1e514fdaf3b35e88092c57e367de356ba201101750a457e7269ac4516d36282a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files, indicating a link farm or SEO poisoning attempt. One of the primary links, 'https://ttraff.cc/pify?keyword=clinical+nutrition+manual+pdf', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains this same redirector URL, suggesting the primary purpose is to lure users to malicious content through a chain of redirects and linked documents.

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.cc/pify?keyword=clinical+nutrition+manual+pdf
    • http://files.chickswithdecks.co.uk/uploads/1/3/2/6/132682819/dadedalofojurefof.pdf
    • http://files.beaconofhope-africa.org/uploads/1/3/1/4/131437655/b2a283a928e05d3.pdf
    • http://files.keysofawakening.com/uploads/1/3/0/9/130969761/a797533c80a.pdf
    • http://files.giftsandgraphics.shop/uploads/1/3/0/7/130775866/9254721.pdf
    • http://files.mathandcollege.com/uploads/1/3/2/6/132681443/takemetokujirumuwuva.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/nesur.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/fepejekilidivarovetadagef.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/45608734368.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/44334877852.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/celestron_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/15746403072.pdf
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/rujipakijepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/fizilokixovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0679/5686/files/zuluteb.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/zukara.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/80215653638.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d54.bin
844d742bfa64c9c3c509970b4049bc8cbed76154a008404a5c2a043de3417db4
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D54 4912 bytes
font_01_sfnt_off00005de3.bin
3242f0a258d181d03da7f5c3ea08b6b22218a704aee6d961265a4e414620be8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE3 9796 bytes
font_02_sfnt_off00007f42.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F42 4324 bytes