Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce30af1f477dc01…

MALICIOUS

PDF

43.0 KB Created: 2020-08-05 01:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62e42179f6a8470729aa7e8baf7c2f20 SHA-1: 90062ef508c785607b97f038c5f87d28a63bd003 SHA-256: dce30af1f477dc0158aa3038a9dd2a5888caa40cb6e2d48fcb07937ab8690ca6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=weight+for+age+z+score+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the file exhibits characteristics of a link farm, with numerous embedded URLs hosted on various domains, suggesting an attempt to game search engine results or distribute content across multiple sites. No scripts were extracted, but the presence of multiple unknown and potentially malicious URLs is a strong indicator of malicious intent.

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=weight+for+age+z+score+pdf
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.southwestyogaacademy.co.uk/uploads/1/3/1/8/131856937/6a3e9e.pdf
    • http://files.notjustwire.com/uploads/1/3/2/7/132740606/daluwoxaga.pdf
    • http://files.continentalmix.com/uploads/1/3/1/4/131407877/menasegiwulovu-mijofeg.pdf
    • http://files.aumijewels.com/uploads/1/3/2/6/132695679/6783568b50cf0a.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2916/files/98221240205.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/vector_mechanics_for_engineers_dynamics.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/lomodamifexez.pdf
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/15437195127.pdf
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/92522020648.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/9685722968.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/89648959000.pdf
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/68263421025.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/gilinadidorugabadasugatov.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/gakawogiredodavifad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/wexirewemofidulo.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_off00006983.bin
0cb2900076877d560e4924f57237f9c6adc2eb6d97c2df61174dacf7a56b5e18
pdf-font-stream PDF embedded font (sfnt) at offset 0x6983 5448 bytes
font_01_sfnt_off00007c23.bin
bcc0085eb45bca8c789c744f3abbcfedff5f059d51772a543dbb7ebef7912bde
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C23 10176 bytes