Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cff5ab0dd491b3…

MALICIOUS

PDF

74.6 KB Created: 2021-03-03 11:29:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 864c46a04fbb6c7d63c4550033c08bb1 SHA-1: 626c5e7febd773ecb34333de75459307c23cb33d SHA-256: e3cff5ab0dd491b3d189488112a6669634006d62216f5f1e68dc99958f90701d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=sports+games+unblocked PDF link annotation
    • http://trelon.fun/918048714956hpqr.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/kuzapodigagijapobexave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480594/normal_601c5d0236f82.pdfIn PDF document text
    • https://lutomired.weebly.com/uploads/1/3/5/3/135316507/suzeribuze-nalonosijoz.pdfIn PDF document text
    • https://kobokudebixisog.weebly.com/uploads/1/3/5/3/135390699/kupurirudom.pdfIn PDF document text
    • https://sixutaxujarupi.weebly.com/uploads/1/3/4/8/134882582/wawawowil.pdfIn PDF document text
    • http://chaptejvxz.fun/happy_wheels_online_levels_pcuchxl.pdfIn PDF document text
    • http://choosenews.space/65859153042vb42w.pdfIn PDF document text
    • https://banetopebored.weebly.com/uploads/1/3/4/8/134874573/nesajetasobabukika.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/96039674741.pdfIn PDF document text
    • https://regifevadep.weebly.com/uploads/1/3/4/4/134476302/3830904.pdfIn PDF document text
    • https://jaduxokapatusiw.weebly.com/uploads/1/3/5/3/135301375/341f7b6ae85c.pdfIn PDF document text
    • http://naturalik.fun/the_crossings_premium_outletsdd9hd.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/woxorojero/63033593464.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/bevavopuliri.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_off0000e727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE727 5700 bytes
SHA-256: 9c68e6f3c46c6c766bc00a3e5fffcf2617bfc08d738a6ae190d424a894773913
font_01_sfnt_off0000fa71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA71 10488 bytes
SHA-256: e039ce1318e67932049957dac3ec2994dfbc2c5a6adc0b2557dfc40fcee141f6