Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb0e2fadc9feb07…

MALICIOUS

PDF

41.9 KB Created: 2020-08-28 01:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8602dde3dc322e0f72d0bf858c7cca42 SHA-1: 4fe3939968b1b47755cb8f37ba75490af63c3db0 SHA-256: 0eb0e2fadc9feb0715e35aab4561eaa2e79cbf7ea2c3084bb233382482683d7e
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, suggesting an attempt to redirect users to malicious content. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

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=price+realization+formula
    • http://files.southsurreygardenclub.ca/uploads/1/3/1/4/131453348/gixusogepeguwuj-zesukol-jusimo.pdf
    • http://files.myworldsparkles.com/uploads/1/3/0/8/130874254/wutakobenajisat_kasonaros.pdf
    • http://files.huxtersnookercoaching.co.uk/uploads/1/3/0/9/130969489/dizufisorudas_wonawebiwivula_vanosarafapi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/samsung_tab_s2_8._0.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/43920302454.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/fundamentals_of_financial_management_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/39175817980.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/planilla_tarjeta_de_credito_banesco.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/13718097228.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/pitexevovalojiludem.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/32463140248.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_off00005919.bin
58359b74d200a3633316d4060d082482e2ef8eefeb9c8e4e1dea6b6caa831beb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5919 4784 bytes
font_01_sfnt_off0000693b.bin
ed4460088d80ad7179a9028e5baba12b6a3ee2de96f86b30cb89de9651142f21
pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 10492 bytes
font_02_sfnt_off00008d14.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D14 4324 bytes