Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d423f25366e37ad…

MALICIOUS

PDF

38.7 KB Created: 2020-09-06 17:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7494e64b4af7d3c141e723e41b1e480 SHA-1: bb47ec448b05d08140d3344b0d4ff6317374e390 SHA-256: 5d423f25366e37ad73f3bc9acf8792600d2e8fb20b4b9ddd78d6e5391ff6e3e3
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.link, which is likely intended to lead the user to a malicious site. The document body and embedded URLs suggest a lure related to a 'weather report' to entice clicks. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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.link/pify?keyword=weather+report+havelock+nc
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/factors_affecting_academic_performance_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/pojugesaxizuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/nututitekubanamijemetew.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/92367421537.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/parufatedikupufeweb.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/59359577723.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/41400435449.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8172/files/statistical_techniques_in_business_and_economics_17th_edition_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/pidalulukovu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dee.bin
714e0282e961ec66c87eae4c40ce85d84537d6bd65f8b15c992e04ad863de6be
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DEE 4720 bytes
font_01_sfnt_off00005df8.bin
e27c327ba91918f6ac3696f3338d4b56db9050227c685cee4ebfbd28b19370cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 10084 bytes
font_02_sfnt_off00008038.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8038 4324 bytes