Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e23dbbd6d9f96ff…

MALICIOUS

PDF

53.0 KB Created: 2020-08-07 20:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8a62bd2188bc3cb37dfafaf127a38c6 SHA-1: 6130185ae908c5d8cce8f40ba70be4f51ea4a57c SHA-256: 1e23dbbd6d9f96ffbabcc0c873e366bb048f4808e0678c18cf769ba14703aa7c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many pointing to a link farm hosted on cdn.shopify.com, designed to appear as legitimate search results. One prominent link, 'https://ttraff.ru/pify?keyword=adagio+for+strings+arrangement+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=adagio+for+strings+arrangement+pdf
    • http://files.u-fit.org/uploads/1/3/1/3/131398135/dafox.pdf
    • http://nojutuji.desmoinesmta.org/uploads/1/3/2/7/132712207/xepepewikimegomixu.pdf
    • http://nixen.austriangallery.com/uploads/1/3/0/9/130969060/dawazapereduni_kemalut.pdf
    • http://files.joeyessmaracing.com/uploads/1/3/2/7/132741029/10833.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/hack_cookie_clicker.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/sidusuvulojoguzijalowep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/liwifejemulepadojuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/courtship_of_eddie_s_father_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/74214565169.pdf
    • https://cdn.shopify.com/s/files/1/0439/7747/4206/files/lefodelaresukadititisedor.pdf
    • https://cdn.shopify.com/s/files/1/0437/9161/4114/files/algebra_2_for_dummies_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37629755229.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/mijozogixoruporewe.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb7.bin
9777fa8832e73dc5a7defe36886b2925742b83bcc15d372caed8c779702a2014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB7 5320 bytes
font_01_sfnt_off00008ec1.bin
7c8ddb7a41db8651a4efe5573178c570bf93e11183b214a3c519738c0025be82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC1 10112 bytes
font_02_sfnt_off0000b186.bin
73e2bae015806fcbcea00a5e77fef36cf57312733aebee32ba98308b5ce41d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB186 16120 bytes

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