Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c588cedc9c8ab8c…

MALICIOUS

PDF

61.5 KB Created: 2020-10-26 12:08:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ab95c8064c0fd21bba413060d5ae0f4b SHA-1: bb59429e3c8885a1c3ecbabce8e06dda77e544b2 SHA-256: 9c588cedc9c8ab8cc10b04500834839c666040932db7687c6eb7a5e766123671
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=msedcl+change+of+name+form+pdf In PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/jenefemafawal.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/a6277b9dece4.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/najobidewematexokob.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/funibopise-rafutaneg-nijagunax-reliwoga.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/fagewulo.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/vabikadapetota_dajeseni.pdfIn PDF document text
    • https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/zakifafob.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/5132354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_5f9671ac973e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5f8e81a729a49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f927066994ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419195/normal_5f967d35573c4.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/002d930dca.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/2723186.pdfIn PDF document text
    • https://nojarotawufa.weebly.com/uploads/1/3/4/3/134313922/5ba63286d57f650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388839/normal_5f938d2e86940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381534/normal_5f8ff3fc89497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5f8e07cf3c39c.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000979b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000979b.bin)
    • https://cdn.shopify.com/s/files/1/0496/7255/2601/files/jefozexaxopibaxufabes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6574/8887/files/cartoon_coffee_cup_with_steam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7250/7044/files/free_guy_2020_free_download.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 extracted file (font_00_sfnt_off0000979b.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000d2f3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000d2f3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000979b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979B 5572 bytes
SHA-256: f2a6b89beb130e1c5a704ac22e58ff0356ae6a6d94e7f5cba335715e3f93659d
font_01_sfnt_off0000aa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA69 11940 bytes
SHA-256: c801027d3b3e02d639cc8463c3edd5ed7e42dd7505c6283832e300c7aa3f9b7a
font_02_sfnt_off0000d2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F3 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3