Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c335b3844610196…

MALICIOUS

PDF

56.6 KB Created: 2020-10-27 16:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e73404001175e535cc33a93f4c22a715 SHA-1: 3cb264bf58c5a987c75fc15a542b1e7b55618f64 SHA-256: 2c335b38446101966a103e85c23d6567da1b7dc3e106593786aa71fa30be08ac
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=michael+hampton+figure+drawing+barnes+and+noble In PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/7492fcfed.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/sawosi.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/5158749399fb.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/e56dd020.pdfIn PDF document text
    • https://ranemexamegen.weebly.com/uploads/1/3/4/4/134440137/lomutut-genasevedej-zevolugilibin-maluvorumoj.pdfIn PDF document text
    • https://tujebikofo.weebly.com/uploads/1/3/4/3/134359874/kepixik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f933da744cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f88a1da8e0e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5f8cfc4e7cc21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383340/normal_5f8c3e7816bae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5f8b5fe68be5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f870832cb2b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f8c0db2e9d4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f870edb3f255.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/kitonuw-vigus.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/lepaxi.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/tijixu.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/dcc03f8ba72.pdfIn PDF document text
    • https://nofizosol.weebly.com/uploads/1/3/4/5/134500220/e9ee68e7f8de6.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009a05.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009a05.bin)
    • https://cdn.shopify.com/s/files/1/0504/6747/1538/files/flying_monstrous_creature_rules_7th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/mettler_toledo_sevenexcellence_ph_conductivity_meter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6347/5869/files/36223917308.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_off00009a05.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A05 5804 bytes
SHA-256: ae1bc20b0c6803418c4255549b2af73e780f8af16c796c3a1b1936d8f978388a
font_01_sfnt_off0000ada7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA7 11348 bytes
SHA-256: cee2dd2a91fdd8559be1f8b65d72c64e8a59c0a5e1779a49e38279e631faee59