Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a659a016927b9d…

MALICIOUS

PDF

48.7 KB Created: 2020-08-03 22:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a75c6454562a742cdbd999c17b77c72c SHA-1: 786d1d6fd4ac315c25dc5bc294ab0b02c28dd364 SHA-256: f0a659a016927b9db2c1d93028954e2a97a91c8b1d43fa1ca7aa393b5967a78c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=design+a+bcd+to+7+segment+decoder+pdf'. This URL is presented within the document body, suggesting a phishing or scam attempt by disguising a malicious link as a search result. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely to inflate search engine rankings or distribute malicious content. The ML classifier strongly flags this PDF as malicious.

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.ru/pify?keyword=design+a+bcd+to+7+segment+decoder+pdf
    • http://files.nicoleandersonconsulting.com/uploads/1/3/1/4/131437725/6480490.pdf
    • http://files.infinite-life.com/uploads/1/3/2/6/132681576/2758334.pdf
    • http://files.siouxlandholisticexpo.com/uploads/1/3/0/7/130738848/485df79cb.pdf
    • http://wusik.malloryeaglewood.com/uploads/1/3/0/7/130739275/4fdd210889.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/16970233472.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/97357552613.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1877/files/43196090403.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/juduxiwikatimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/wipefudoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/ditugolekawe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/boxosoluxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/bars_and_melody_hopeful.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1702/files/feregimikevimadizegijew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gotisirifiwixi.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/
    • https://cdn.shopify.com/s/files/1/0428

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007174.bin
d78f6677a4fc098c69ad3c138405283bbaeb08c389a6e24dd58819489292e846
pdf-font-stream PDF embedded font (sfnt) at offset 0x7174 5448 bytes
font_01_sfnt_off000083de.bin
1827e99547dfbbe6bfe7524a9f63d0843a36524b981581b2245d2c11544b1f17
pdf-font-stream PDF embedded font (sfnt) at offset 0x83DE 10396 bytes
font_02_sfnt_off0000a780.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA780 4324 bytes