Malicious PDF — malware analysis report

Static analysis result for SHA-256 1946073e7ba19913…

MALICIOUS

PDF

39.0 KB Created: 2020-11-07 09:20:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2756f1ce4d77792e6c423ec84b6ea8ee SHA-1: a110c2579ea4ad0f0c9f7c075e912577af6edf25 SHA-256: 1946073e7ba19913e27af1ebcf0bffe58c4f5707c2e1c089faa5001b719520d7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=sufism+taoism+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f98cbf62759d.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/1482248.pdfIn PDF document text
    • https://wejapofi.weebly.com/uploads/1/3/4/5/134590092/347387d990ee.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/6236028b94.pdfIn PDF document text
    • https://zuforupixonop.weebly.com/uploads/1/3/4/3/134394080/xozizuziguveku.pdfIn PDF document text
    • https://digufotunu.weebly.com/uploads/1/3/4/2/134266503/janulutabufafe_febozibukezuguj_tisuvagid_folulepirafus.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/1763158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378848/normal_5f8ebaa09ba67.pdfIn PDF document text
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/wiwetim.pdfIn PDF document text
    • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/muduwuku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sakazedeg.files.wordpress.com/2020/11/wow_classic_alchemy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/vekapisike.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
    • https://suwuteliriga.files.wordpress.com/2020/11/vijekugalowuzuta.pdfIn PDF document text
    • https://sazaxasegu.files.wordpress.com/2020/11/vizude.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/fezazamebunilubosa.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/waifu_academy_apk_download_for_android.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_off00005c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C10 5164 bytes
SHA-256: 52d8359d7f9e89285628beef0da7c1b7e706a4e9811a4d3e157accdefa17ecf7
font_01_sfnt_off00006d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 9892 bytes
SHA-256: 3d3fff0ad6ae53bafea7322bba619e465b8ba9ce06f1abf26083aa160510f1e8