Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae531a39906361fd…

MALICIOUS

PDF

42.0 KB Created: 2020-11-09 07:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ffa4b8f869fd3bb646142499af5857fa SHA-1: 5ee7cc88ddc627d6fbc9a867003c206b0692d85f SHA-256: ae531a39906361fd48cdb0aa83202664fe58dd60a1b348248907772a3b7ff2c9
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://trafftec.ru/aws?keyword=western+international+high+school+mi PDF link annotation
    • https://lajojadarexod.weebly.com/uploads/1/3/4/5/134506383/rapotapubujeto-pupujagelomuw.pdfIn PDF document text
    • https://warobakun.weebly.com/uploads/1/3/4/4/134486798/a45d9986e7.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/b4c3416953b5924.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sesugoj.files.wordpress.com/2020/11/free_adf_aptitude_test_practice.pdfIn PDF document text
    • https://sirilab.files.wordpress.com/2020/11/50475273509.pdfIn PDF document text
    • https://wemirosux.files.wordpress.com/2020/11/chennai_express_tamil_movie_in_tamilgun.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f679d25-f655-4705-8f61-06cc90d1653d/60799398584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3874f9-2871-4a44-82ef-d7c1d50f99e0/napoleon_hill_free_download.pdfIn PDF document text
    • https://tukowonoko.files.wordpress.com/2020/11/govizivowebok.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://kixatipu.files.wordpress.com/2020/11/39834976345.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/autocad_3d_books_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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 5228 bytes
SHA-256: ea2bd616f56740923fd5b4900f34af5de200fed9b4d784ae854d440cb1fef4e2
font_01_sfnt_off0000755f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 11280 bytes
SHA-256: 5ff3add1a963a56dd0958f55a004c313684dee1cc88bcfdb1eab27c0a23bbbb9