Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0995ba66642ab0…

MALICIOUS

PDF

73.7 KB Created: 2021-02-24 13:28:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5679bb2e18ff0b13f5af07dd9f29e91 SHA-1: 3830a20a652e9d51cb710440def9163a2e668a9a SHA-256: ac0995ba66642ab05f61b1c53cab0f717bcc423d565e45df11349ce69f11d519
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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 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://jottigo.ru/wb?keyword=my%20cloud%20wd%20backup%20software PDF link annotation
    • https://logesili.weebly.com/uploads/1/3/5/3/135389335/4cd3d9.pdfIn PDF document text
    • http://zalofamanaw.22web.org/incentive_payment_letter_format.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/oaqtiid/soul_seeker_six_knights_strategy_action_rpg.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/duhdXgc/68441755774.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/Siah2U1/45366610340.pdfIn PDF document text
    • https://mabavelege.weebly.com/uploads/1/3/0/7/130775551/4579310.pdfIn PDF document text
    • https://wivepeweg.weebly.com/uploads/1/3/1/4/131455463/1e7a8d8035.pdfIn PDF document text
    • https://mumetimobenuja.weebly.com/uploads/1/3/2/3/132302956/pofemodudugow.pdfIn PDF document text
    • https://xuwatezifi.weebly.com/uploads/1/3/5/3/135305435/watopigumevepusaxal.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/CgcRhcj/sakibonajunalose.pdfIn PDF document text
    • http://besemafobekilir.22web.org/colorn_colorado_este_cuento_an_no_se_ha_acabado_personajes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibibum.epizy.com/dirt_bikes_for_sale_honda_80.pdfIn PDF document text
    • http://retobawunabe.rf.gd/zezuponupilipij.pdfIn PDF document text
    • http://larevatisuti.rf.gd/john_deere_ride_on_toys_tractor_supply.pdfIn PDF document text
    • http://winupenelipumo.epizy.com/circuit_court_case_information_arlington_va.pdfIn PDF document text
    • http://veluvuwipigunuw.rf.gd/yearly_calendar_2018_excel_template.pdfIn PDF document text
    • http://sokagozu.rf.gd/70443971930.pdfIn PDF document text
    • http://xudadadof.epizy.com/newsletter_photoshop_template_free.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_off0000e455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE455 5552 bytes
SHA-256: 2e8ae693646f67095df98fd92047af97f6b7c7272858f3afb1e4e47aeaa84b8a
font_01_sfnt_off0000f76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76A 10156 bytes
SHA-256: bb42592747d584df418c596d7fb616378cc4b675862984c31e6e2d40af713c83