Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8811738bf40f8e…

MALICIOUS

PDF

50.6 KB Created: 2020-10-29 02:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d7543143f3fb3cde3ad168abd2a97377 SHA-1: df97ac2b4845f5e82a7d3ccb88575c0331ab6b0c SHA-256: 6e8811738bf40f8eb1359e5fecfd730236d2e5d859709177a76377a7b81609c0
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://cctraff.ru/strik?keyword=katsumoto+the+last+samurai In PDF document text
    • https://pumewigegokofav.weebly.com/uploads/1/3/4/3/134317234/limojubakako_fonabaloliwas_bumuso_gusumofile.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/kidorulajekosu-zilumevi-tegobowobuzasu-gokewipobitu.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/botekajevones.pdfIn PDF document text
    • https://pasuzexogisinib.weebly.com/uploads/1/3/4/2/134266431/sizila.pdfIn PDF document text
    • https://donikigegetala.weebly.com/uploads/1/3/4/3/134311768/varitirujajepar-xipowapavixilu-lelev-bizamibofozubiz.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/viluvenu_joxuvifadulaxi_funikumuvalusux_vadejinidenagi.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/a72beb146c.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/9543927.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/358353.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/aa92d.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/f38b7566561.pdfIn PDF document text
    • https://buwutele.weebly.com/uploads/1/3/4/4/134450545/tuwivosov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f96e87264b2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419836/normal_5f996b47a6bff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f99f1f7d4858.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/jebawuba_sorowujuwadidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_5f8e7dc9427e4.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/xulevojazisini.pdfIn PDF document text
    • https://pawuxadatunu.weebly.com/uploads/1/3/4/2/134266652/xokujigatonelem.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/wewidurifi.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/faxenisurasasu-narotonibal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8757b4cc4b3.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/lanesesubixata-ruxisodufuset-tofuwaxe-ruteko.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000892f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000892f.bin)
    • https://uploads.strikinglycdn.com/files/ae1177b3-038a-4f85-a4d1-89786ad30119/rasuwidejevevozatakebin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcbefb9e-d559-41f8-89d4-cca9cbd02b7e/fimurapusafemewuzin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d90ed0b-a371-48e0-8e17-a8938f92a1ea/wind_waker_soundtrack_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_off0000892f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000892f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892F 4896 bytes
SHA-256: 409da6fae023bd526cac0d53626c58f1bcbcbfdad88f8de6cd3d28e011c085cb
font_01_sfnt_off000099aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AA 10272 bytes
SHA-256: 335ceed45d610eca9ddb95f7a4ca2448fabb2e01b232a82aa60a36d6a030603f