Malicious PDF — malware analysis report

Static analysis result for SHA-256 10419f4d60b7e0e5…

MALICIOUS

PDF

57.9 KB Created: 2020-10-28 15:07:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 47b71684cc3edcea07e2b5e7bc79937e SHA-1: 4ad2ef3dd3badaae011a92b8a47b79dd6b03c340 SHA-256: 10419f4d60b7e0e513d30a040b98def98c2571f70c80b8be8a4e47a3e831d82d
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=imperialism+in+japan+essay In PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/40003b1a.pdfIn PDF document text
    • https://mufanebix.weebly.com/uploads/1/3/4/3/134349193/8f49b456ef6094a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f892a27b9854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8a8b5366a50.pdfIn PDF document text
    • https://josafobuwevaj.weebly.com/uploads/1/3/4/4/134464642/c670fca483.pdfIn PDF document text
    • https://mamotuzukaw.weebly.com/uploads/1/3/4/4/134438076/tulab-likul-gelij-zisaxew.pdfIn PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/zizebolo-wabamazexedesep.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/8a98ea80e.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/kavawabukoweduz.pdfIn PDF document text
    • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/1575275.pdfIn PDF document text
    • https://moxowikoxub.weebly.com/uploads/1/3/4/0/134096036/ratuwi.pdfIn PDF document text
    • https://motadali.weebly.com/uploads/1/3/4/3/134368257/fesawugu_bisonepu.pdfIn PDF document text
    • https://nipibodofabujid.weebly.com/uploads/1/3/4/2/134265940/nosipexex.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/kukowinotesem.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/lerawoneli-gokuduguretaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a448.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a448.bin)
    • https://uploads.strikinglycdn.com/files/28db2c98-76d5-4bd0-9950-d0c960d3687a/dubakejel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3abb1b1-8070-4446-8d5c-246ccbeb6223/xorabuvazaxot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c934b3-b8dd-433b-9c65-ca0d8b463a5d/vezexow.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/bible_nrsv_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/82264586667.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/lowowirawudinavotojawit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985838eb-7e70-48f7-8cc7-ec39574c4057/eyvallah_indir.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_off0000a448.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA448 5080 bytes
SHA-256: 224ee57e938155ca651b6fc8584b85ebd7ec610578f9891a23db9c272e9e65f0
font_01_sfnt_off0000b57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB57D 10764 bytes
SHA-256: 9311656f0dd9679c60dd634b5faabaf5cccee7cebe722e0165bc90a2fd4285db