Malicious PDF — malware analysis report

Static analysis result for SHA-256 140971d678d5dd49…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 23:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 036a62dda75e5989f5965f55381e7896 SHA-1: f387ce1544b7b5b2b68256fe056efbeeccdbfbad SHA-256: 140971d678d5dd49c67ac2fe3d9c8e1d112350fabddac8ac59bf297641c9b84b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a malicious redirector link disguised as a legitimate resource. The link, "https://ttraff.cc/pify?keyword=big+data+analytics+tools+and+technology+for+effective+planning+pdf", is designed to lead users to harmful infrastructure. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=big+data+analytics+tools+and+technology+for+effective+planning+pdf
    • http://files.lamaisonneuve.com/uploads/1/3/1/4/131406826/9e1ca75.pdf
    • http://simujaj.aaronjgodwin.com/uploads/1/3/0/7/130776791/36fb20d62f7816.pdf
    • http://fularaduj.nursingteas.com/uploads/1/3/1/4/131453109/luvurawukekukode.pdf
    • http://files.parislomas.net/uploads/1/3/1/8/131871740/e902ee3102.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/nazomimajelemeleze.pdf
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/31688687367.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/nidiluzorol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12584167006.pdf
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/zunetodirozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7732/files/arithmetic_mean_problems.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/relugixokusuxoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2322/files/61060837408.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006420.bin
8ebe89a0d40da2c634678e1dcf7bc47ea8a3eb24de7d7ffee8b29de98a6ac9f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6420 5628 bytes
font_01_sfnt_off00007759.bin
493e34669d3afae8227268f642dee37aaec240816537f9aca16f436c436dbfe8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7759 11916 bytes