Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10589761905574c…

MALICIOUS

PDF

44.4 KB Created: 2020-11-08 22:24:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5ba7925fbc7434f88688027aac1489da SHA-1: 0c8681ead7875d50a52c9fb150818329b958c382 SHA-256: f10589761905574cbcdb5853aa9ea53b18916a9e968a75d4f6370c70190c2dac
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/123?keyword=pizza+clicker+hack PDF link annotation
    • https://lonunibulitog.weebly.com/uploads/1/3/4/4/134498578/bcb0c6be49d2d.pdfIn PDF document text
    • https://jivetigaforivuj.weebly.com/uploads/1/3/4/3/134350389/9743467.pdfIn PDF document text
    • https://vewirorerisemi.weebly.com/uploads/1/3/4/6/134627211/zerax_vudotasaxu_fusunisepa_xoromozogi.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/lemavetobowogis_vexakopasejo_sositefafum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8ea385ae605.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kaxemibewur.files.wordpress.com/2020/11/59463510899.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/98351464444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56ae070-4a4b-44ff-b452-660c103a94cf/24810809189.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/12797489093.pdfIn PDF document text
    • https://minezonateta.files.wordpress.com/2020/11/72776004096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3775b208-19bb-44d7-bfac-d9cb3cf30d16/chicago_electric_18v_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/kilutiroxi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F3 4824 bytes
SHA-256: cf0607004f227047a2ac110e716d53607d45386a9642b85765d6d772d28a7aa6
font_01_sfnt_off0000685f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 11112 bytes
SHA-256: 70ccdc70e4adc33296ff7dc91bd434172def3b93ee5f5a1458e235e1cd8a20d2
font_02_sfnt_off00008ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA2 16660 bytes
SHA-256: 682a406efcdf7dd49f9c494c129bca6394f160b3e372cc4ba493723cd6bcd7e0