Malicious PDF — malware analysis report

Static analysis result for SHA-256 463eea963dffa248…

MALICIOUS

PDF

35.9 KB Created: 2020-10-02 04:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f0446b2fd3af42c6c2b52c66e95c1bed SHA-1: 6a879e518e692b90ec8c47633df04bcca9c7b0be SHA-256: 463eea963dffa2480dd5d56967f5141b1075f0a9d6b2af24f27f86684be0fbf8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=dise%25C3%25B1o+editorial+yolanda+zappaterra+pdf In PDF document text
    • http://pesiga.alpersfineart.com/uploads/1/3/0/7/130776219/gutulozubakugi.pdfIn PDF document text
    • http://zugovo.internallyflawlex.net/uploads/1/3/0/8/130813604/f40f6.pdfIn PDF document text
    • http://files.tritttechnologylab.org/uploads/1/3/0/7/130775868/begazabarawu_zepegij.pdfIn PDF document text
    • http://files.ripplesoffaith.com/uploads/1/3/2/8/132814241/4650649.pdfIn PDF document text
    • http://jomamimof.tracks-up.com/uploads/1/3/2/6/132696323/sogakixuxilenapap.pdfIn PDF document text
    • http://files.stellarendurance.us/uploads/1/3/1/4/131410094/tududakup-wexitoso-livalulunubor-tamab.pdfIn PDF document text
    • http://files.weavevirgin.com/uploads/1/3/1/8/131857562/tevowul.pdfIn PDF document text
    • http://files.mobilealabamadivorce.com/uploads/1/3/1/0/131070530/muxiruxori.pdfIn PDF document text
    • http://files.nancybmann.com/uploads/1/3/0/8/130813357/rawubanovusad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/three_houses_mercedes_romance_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/98475827482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6793/5393/files/87732259193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/high_blood_pressure_baroreceptors.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_off00004b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B70 5400 bytes
SHA-256: bc5256fb3ed8268b3b7d83c0b9549de3d7098e18ae0830b3634671c575baa1f8
font_01_sfnt_off00005db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB0 10248 bytes
SHA-256: a21f3d42caeeb4095967efca359dbd56f26d7eff48c9edda1057c37e1ac106ca