Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae74be99329d6b5…

MALICIOUS

PDF

36.1 KB Created: 2020-10-02 23:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 13b55c7e6fb5f5eeffe2b5cddf6853d3 SHA-1: 335a2d7282e52d501db11f215cf75c74c8817e77 SHA-256: eae74be99329d6b5f15f803910d350055669a0df6d83fc9ae1d74c0fe5fc2da0
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://ttraff.link/pify?keyword=adobe+acrobat+xi+pro+serial+number+generator+online In PDF document text
    • https://site-1037869.mozfiles.com/files/1037869/fokogavet.pdfIn PDF document text
    • https://site-1038852.mozfiles.com/files/1038852/56553957516.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/muwozu.pdfIn PDF document text
    • https://site-1036926.mozfiles.com/files/1036926/39406138400.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/8088270984.pdfIn PDF document text
    • https://site-1042625.mozfiles.com/files/1042625/betuxe.pdfIn PDF document text
    • https://site-1038636.mozfiles.com/files/1038636/33975720151.pdfIn PDF document text
    • https://site-1038514.mozfiles.com/files/1038514/subugulanufupadus.pdfIn PDF document text
    • https://site-1037113.mozfiles.com/files/1037113/zawijogobixorel.pdfIn PDF document text
    • https://site-1039932.mozfiles.com/files/1039932/65456921771.pdfIn PDF document text
    • http://lalit.garybachers.com/uploads/1/3/0/7/130738765/fagirapin_xepoka_forubumazem_lipidisi.pdfIn PDF document text
    • http://jukebud.redeemernewton.com/uploads/1/3/2/6/132683008/paginowevugalap.pdfIn PDF document text
    • http://taxetabe.hillsjanitorial.com/uploads/1/3/1/1/131164067/wojeloximix.pdfIn PDF document text
    • http://files.conceptarianworx.org/uploads/1/3/1/4/131452782/kidusazoraroxawojipi.pdfIn PDF document text
    • http://xezir.winnebagoarchersinc.com/uploads/1/3/0/7/130776487/navamufut.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/1/0479/6484/8291/files/55612134072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8154/3079/files/30146435084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1118/9147/files/24683362265.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_off00004f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F4B 5588 bytes
SHA-256: 97baf13e303aae13b61b41a789d317a70d4b360f071a0bdf70c4d2a16c707e24
font_01_sfnt_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 9676 bytes
SHA-256: b5a2d8df95814886ce5e2e2d3f2fc6168bf412361273f692f5ef7000173d24cf

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