Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c998197d92eb534…

MALICIOUS

PDF

68.3 KB Created: 2020-09-01 00:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6254bd01117785c2afd28ef3f3ee0f1 SHA-1: 20d72207e6339859e885612e08b95b45b14fe461 SHA-256: 0c998197d92eb53400b9c56d66a1772ff99def857cd71d689ed47d77239f5a7b
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document's primary purpose is to redirect users to malicious content, likely a phishing or malware distribution site.

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/wix?keyword=elementor%252F+theme%252F+get_location+templates%252F+template+id
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/2f3ac6_c725a3060abe4507a6cc9893a9a0d9a7.pdf
    • https://static.usrfiles.com/ugd/b50c55_c59631ec98e945e2ba176bab8363e698.pdf
    • https://static.usrfiles.com/ugd/7baf93_078cc502dd274bda98076987b45fb6e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_641597aefc2c4c928a52d6f2afefb707.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/98518955359.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/24402693413.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/bukafujaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2315/files/funanunozeva.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/curriculum_guide_grade_1_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0432/8541/4056/files/96079135897.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/dreamweaver_cs3_portable_kuyhaa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1738/6659/files/15801460745.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/vepejuzakixevebufisev.pdf
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/ssa_1724.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/39358790159.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/administrative_management_theory_advantages.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_off0000ba15.bin
af1278a516cc26eb826996da2625b277a34a85c6460edf2b92499e41a4e691cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA15 5512 bytes
font_01_sfnt_off0000ccc0.bin
8dfefb8807d973e3ccc8b8f5003a6d9df796b16b8dc7cff7df85a84f0a9c8a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC0 17744 bytes

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