Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecb82fbcfb64cdd…

MALICIOUS

PDF

43.2 KB Created: 2020-11-08 21:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 0f41989f118b8f8c38a70163e1e74fb4 SHA-1: f520bf8081c5b03ad8f803071c3ee4fdb172b68e SHA-256: 3ecb82fbcfb64cdd2af04b50675e0c17b9ba0e82d42f7aab4bb283ab3006d5de
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://traffset.ru/aws?keyword=blank+body+measurement+chart+for+women PDF link annotation
    • https://xufolonul.weebly.com/uploads/1/3/2/6/132695880/koxakudaretelod-waruzer-dutumowurotezoj-goguki.pdfIn PDF document text
    • https://mulepulevuva.weebly.com/uploads/1/3/4/3/134366291/levinudok.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/wepezuwodu-fivusosi.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/runet.pdfIn PDF document text
    • https://misaxokur.weebly.com/uploads/1/3/4/3/134354007/zutuxatite.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/dudapaga.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fuvogejub.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/7931f5a29.pdfIn PDF document text
    • https://laratenin.weebly.com/uploads/1/3/2/8/132816160/2621688.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/xavumomole.pdfIn PDF document text
    • https://fimelaxezabu.weebly.com/uploads/1/3/4/6/134622198/94d05462471fbb.pdfIn PDF document text
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/zijapopenid_figunib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xebareto/ap_world_history_americas_spice_chart.pdfIn PDF document text
    • https://sikidorif.files.wordpress.com/2020/11/mepopafuzitiguteralamusa.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/wiwababofutejutumesi.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_off0000666c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5708 bytes
SHA-256: 5b92aac2e64ebb4e40e2ad7870cb66c8bb6fdc2908fba20597451e1b58ca08c0
font_01_sfnt_off000079c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C3 10680 bytes
SHA-256: d94da3a9d230145564bedc60a9d6e22b5df0845d107f5c3ba91f9836a6c2fa5d