Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89c44ca9fc9ac20…

MALICIOUS

PDF

31.1 KB Created: 2020-11-03 03:03:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5536f3b657b2154a5d88b1e18fec98f3 SHA-1: 7b100d649a42275fa73cf377a6f3845308378618 SHA-256: b89c44ca9fc9ac2010c28e4f26cc8a60898b37a7c6c615e7c39ce7f1ef89974a
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/123?keyword=design+statement+definition+pltw', is the primary indicator of malicious intent. Although no scripts were extracted, the PDF structure and the presence of a malicious URL strongly suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/123?keyword=design+statement+definition+pltw In PDF document text
    • https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/fuginon-lituz-nenebif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f98e9e47baf3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2903fd4b-655c-4328-96b2-2bf315e27a7b/10313200282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0376/7713/files/daruvafivun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba21dc2-9934-4049-bb41-109bd53bcb78/dezoxovuwiwadawuvukerasin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4716/4336/files/97397099809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59fefbb-c9ba-4855-a425-3016069b482e/6308044521.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d642474-6a2e-4dd5-a204-d27488aa227b/ngk_cmr6h_to_champion_spark_plug.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/94602198198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e718559-1d3f-4404-bb13-d305b7021afb/dobovetonemorul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d312204-cce7-4b13-b9f0-8e50e44b24df/weradodifo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40CE 5356 bytes
SHA-256: 520fc306af9ff4cbd58bee7b56cd9761d674af74ceb6e690d2cfa619c210a5b8
font_01_sfnt_off00005311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5311 8516 bytes
SHA-256: f3f7584850f9b1f775ce7e41e07ed6dbf2c7679ff85f5e210cda4a112136f7cc