Malicious PDF — malware analysis report

Static analysis result for SHA-256 0950f3cd245a4734…

MALICIOUS

PDF

40.0 KB Created: 2020-08-06 18:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c6f45f025608b0e2c53cf09ac1c6d40 SHA-1: f5e13fd8c326f85b1a3cdac41b2cb226fc8a2b98 SHA-256: 0950f3cd245a4734d5e4fffb6a1a2aaf552cfae30f6c57f4342fb30c5518acb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary redirector URL, 'https://ttraff.com/pify?keyword=building+management+ordinance+pdf', is flagged as malicious. While many other linked PDFs are marked as benign, the overall structure suggests an attempt to obscure malicious destinations through a large volume of links.

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=building+management+ordinance+pdf
    • http://files.aurabin.net/uploads/1/3/1/4/131453406/6167579.pdf
    • http://files.dkgca.org/uploads/1/3/1/8/131871734/3696770.pdf
    • http://files.charltonkupaahee.com/uploads/1/3/0/9/130969185/6f8550aed930c9.pdf
    • http://files.marsjoyofpainting.com/uploads/1/3/1/6/131606127/1986964.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/casio_wave_ceptor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/widigexukupuvuvaxaman.pdf
    • https://cdn.shopify.com/s/files/1/0437/3846/4417/files/39530540900.pdf
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/64635249818.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/34388141824.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/samawiguvat.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0554/files/agile_approach_to_project_management.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/18662443006.pdf
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/49254473289.pdf
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/cuaderno_de_vacaciones_de_blackie_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/giruladekisebubixefiniwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/8087327132.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_off0000601d.bin
0da4452a384bbd4299e79ff9e8b112c090da0a1ba8be8f8d1e4c2feb4d6644e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 5344 bytes
font_01_sfnt_off00007234.bin
e6fe64cc57b0ed4415f5185650fe2b8256bc4d3e5d6d0949c205f9f020f39e22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7234 9672 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.