Malicious PDF — malware analysis report

Static analysis result for SHA-256 258e7b37405fa03e…

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 16:07:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 68617c316b8d7143871d92486ae450a3 SHA-1: 4b4a6192b786ed575407c71f0cf87c6a3c70420c SHA-256: 258e7b37405fa03ec44917affd5bbaa4515d2991d296ed3332acc2b1384a52ed
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/award?keyword=hill+rom+bariatric+bed+dimensions PDF link annotation
    • https://jasesinokez.weebly.com/uploads/1/3/1/1/131164090/jixofemipe_zelixav.pdfIn PDF document text
    • https://ganizosu.weebly.com/uploads/1/3/4/4/134434359/bubodomomarafi_relefa_perizofexo_sonisamovuso.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/6fRXIhj/infectious_mononucleosis_medical_definition.pdfIn PDF document text
    • http://mastericy-chistoty.ru/saxajokewijofae2uaa.pdfIn PDF document text
    • https://tilawifi.weebly.com/uploads/1/3/4/4/134480999/6423895.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/6nibCjg/digital_coupons_harbor_freight_tools.pdfIn PDF document text
    • http://rabota-plus.club/free_bible_english_standard_versiond5bp0.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/ef85IEv/kixupuviladadavunikulir.pdfIn PDF document text
    • https://wabibazo.weebly.com/uploads/1/3/5/2/135295983/saduledukuxuridiro.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/ihUihoW/poxodoperaxubuw.pdfIn PDF document text
    • http://varistop.site/30919388509gk8h0.pdfIn PDF document text
    • http://1eyvgo.xyz/xujesididutazuxupozagrxjqv.pdfIn PDF document text
    • https://cdn.sqhk.co/demapibo/c0hbRh9/call_of_mini_zombies_1._0_apk.pdfIn PDF document text
    • https://zigikarorusoto.weebly.com/uploads/1/3/5/3/135351373/88a86d65.pdfIn PDF document text
    • http://profapp.pro/44628289459rvd9s.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/ledilaropaxuvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE8 5188 bytes
SHA-256: 0bb5e87938da6308feb38703836da0e446ef13b56d80f154a9708b4c5b06c6ca
font_01_sfnt_off0000ef65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF65 10404 bytes
SHA-256: 2a5d1ab39836b4c43c34fbc1e88b1a3776c2df682087098cc8c09c1818d1e90f