Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a70297481ed814…

MALICIOUS

PDF

78.4 KB Created: 2020-08-02 02:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec91f0adf025ede56c351e2d5d5173e5 SHA-1: b509d6944d68a48588e50a9ee086f5ec8ed7879b SHA-256: 01a70297481ed814ce1057574e0dec03c0d2bc6f6f6fc43f0508eac7283cb508
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, with one specifically identified as a malicious redirector to 'https://ttraff.com/pify?keyword=11414+wayne+presque+isle+wi'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content across multiple 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.com/pify?keyword=11414+wayne+presque+isle+wi
    • http://files.branchlutheranschoolshaiti.net/uploads/1/3/1/8/131871912/vesivorozul-votel-mobutemase.pdf
    • http://files.tomorrowstechnologytoday.org/uploads/1/3/2/6/132695492/zekate.pdf
    • http://files.southdartmoorcommunityenergy.org/uploads/1/3/1/8/131856185/9059338.pdf
    • http://files.aletalederwasch.com.au/uploads/1/3/1/3/131379396/6680275.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/nys_sales_tax_web_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/4284/8418/files/nawogiwevixusebadol.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/pokamapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/gaveridunoxaxosa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/49621442172.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/97210103000.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/disukupiguwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/gewokozisegejaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/64608896265.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/gilodow.pdf
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/ridatatuluzig.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/66556352651.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/55159157120.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_off0000e1d7.bin
f125c1903bf8ab0604cd722d43d8e83e62e3d10a6449c4d6f955bb70d7f22437		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D7 4872 bytes
font_01_sfnt_off0000f27a.bin
fcd4c6d7b6576e9dff197018bab152224e3ed573cb3aeb142366e4d03390037e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 14028 bytes
font_02_sfnt_off00011e19.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E19 4324 bytes

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