Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbfb712bd4d885d…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 09:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a818a7df177e21b5a86006cb567b6282 SHA-1: 2be41acd73e82a7c7cf4828d24319e8300e6b1a3 SHA-256: 7dbfb712bd4d885d6d7871238e208e330c79fc61b342389a6592f818b8839ddc
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external sites, indicating a link farm or redirection strategy. The primary malicious URL identified is ttraff.com, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on cdn.shopify.com, suggesting an attempt to disguise malicious activity within seemingly legitimate content. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=hoisting%20and%20rigging%20safety%20manual%20construction%20safety%20association%20of%20ontario
    • http://files.firstbaptistnorfolk.org/uploads/1/3/2/6/132681477/6459545.pdf
    • http://files.lakegeorgelutheran.org/uploads/1/3/0/9/130969352/72850.pdf
    • http://files.ponderosaspecials.com/uploads/1/3/1/6/131606111/kalex-sojonupoloxi-lizamid-rozukufuxido.pdf
    • http://wugizus.pumpkincurioushistory.com/uploads/1/3/1/0/131070420/liwapu-dovojazajaril.pdf
    • http://files.fullcirclecounselling.com.au/uploads/1/3/1/6/131637656/8619365.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0936/files/gimoge.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/7071661886.pdf
    • https://cdn.shopify.com/s/files/1/0437/8643/6759/files/82950669934.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/motherhood_meanings_practices_and_ideologies.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/lijanogurefudelujajuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/heath_ledgers_autopsy.pdf
    • https://cdn.shopify.com/s/files/1/0428/7977/8979/files/35521711252.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/18311290639.pdf
    • https://cdn.shopify.com/s/files/1/0431/3769/5895/files/12815151625.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/89879641126.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/54402242996.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_off00004e64.bin
ed4670e34be3c7d89e4265e952443d0f65efef89f165a73e0f695845b29582e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E64 5284 bytes
font_01_sfnt_off00006043.bin
3a3e23bef15b69c3510a837a9a61ff5f2ef4749707b7262a6daaec5dca4ed520
pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 10500 bytes
font_02_sfnt_off000083eb.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 4324 bytes