Malicious PDF — malware analysis report

Static analysis result for SHA-256 0943036e6ac6a276…

MALICIOUS

PDF

40.1 KB Created: 2020-08-15 04:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecec2863f3afcb1bd834d52f931f72f0 SHA-1: 93c2e7d3969c6991cd80f0c6989152f1d295a2a3 SHA-256: 0943036e6ac6a2766584dbd60a48783b5b4277c8277ff0bb8aee2593e9c79eb1
154 Risk Score

Malware Insights

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

The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically a URL related to Duke Energy and power outages. The ML classifier strongly indicated maliciousness, and the presence of numerous external PDF links suggests a link farm or redirection tactic. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.ru/pify?keyword=duke+energy+report+power+outage+cincinnati
    • http://bidewevim.mirrorblooms.com/uploads/1/3/2/6/132681611/fuvewisux-vijomenagila-zasisavewab-wapom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/lightybulb_2_answers_9669.pdf
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/dosamuruz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/61052236933.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/guterowefivitaraminuwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/41440712279.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7074/9861/files/19592014959.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/jipizumanafasarujok.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_off00005fcc.bin
ff1a9eee79b468a67cc013713207b1411579288df10f963e0b61c75d4e260b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5148 bytes
font_01_sfnt_off00007180.bin
4abed2b0f777fe2135e16ef1858b04d8080be1483af6d41219cc7025602d756e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7180 10004 bytes

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