Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee0fc7250194a10…

MALICIOUS

PDF

36.0 KB Created: 2020-08-10 10:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9929d56adb72053d9fa78150cc91d4ec SHA-1: 0349f7125a8c2ddd6e3a47294f690961d7ae1069 SHA-256: 4ee0fc7250194a1018f9e8d5888d1e020f0ff5d2f271827783b393b29d15cc2f
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. This suggests the document's primary purpose is to lure users to malicious sites. The presence of a large number of external PDF links, many hosted on Shopify, indicates a potential SEO link farm tactic to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=el+sistema+nervioso+central+humano+nieuwenhuys+pdf
    • http://files.omanroadshow.com/uploads/1/3/0/7/130776841/kasulojemuv.pdf
    • http://files.projectunlearn.com/uploads/1/3/1/3/131378968/xorowixupedisikom.pdf
    • http://safanun.cyberpost.us/uploads/1/3/0/7/130739024/524abe7cd50.pdf
    • http://files.1waybusinessconsulting.com/uploads/1/3/0/8/130814900/tufunafil_xotipolarafa_wusonun_gufulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/30647720145.pdf
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/56960516633.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/define_metaphysics_in_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/pejivalibubezovolus.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/nj_dmv_forms.pdf
    • https://cdn.shopify.com/s/files/1/0437/1641/1547/files/84670621673.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/nozororuletaxitogatewifud.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/weladaxowule.pdf
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/31410283250.pdf
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/xibitobexujamotozawuzute.pdf
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/niwepeberobafevale.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/48009630555.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/how_to_extract_zip_files.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_off00004bd0.bin
f27b9b09adf2f938a1c1015c12959c7f27a7eb812bc6c9056769578bc7054fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD0 5604 bytes
font_01_sfnt_off00005ed0.bin
e22278d6c9e40e0483941aaf73d986db41f944e7185ee52f727f307525fd1efa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 10480 bytes