Malicious PDF — malware analysis report

Static analysis result for SHA-256 f977f480bdd9105d…

MALICIOUS

PDF

63.5 KB Created: 2021-02-13 10:50:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0eacff867ce190e5e832c76891bdb04a SHA-1: 0d4ca37e30f2ba15af73b861c46023bc92fad069 SHA-256: f977f480bdd9105d891ba785fea8e93b71e93748467fa991c6fa5a38a1f245a4
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://bologen.ru/aws?utm_term=microsoft+publisher+advertisement+templates+free PDF link annotation
    • https://cdn.sqhk.co/difigobon/2ujgPUX/classic_rock_and_roll_free_music.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/cihdLUf/who_is_the_killer_in_episode_1.pdfIn PDF document text
    • https://golakabuzoved.weebly.com/uploads/1/3/4/8/134870140/871152.pdfIn PDF document text
    • http://peregukejipesa.iblogger.org/absceso_perianal_tratamiento_antibiotico_de_eleccion.pdfIn PDF document text
    • http://fineagencyy.com/security_risk_assessment_document_templateawonz.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/ghNSwja/92879587716.pdfIn PDF document text
    • https://mejatuwunuzawe.weebly.com/uploads/1/3/0/7/130775850/2594015.pdfIn PDF document text
    • https://rewojomivatal.weebly.com/uploads/1/3/5/3/135345623/dizezawub.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/EZEWhiu/space_engineers_change_planet_gravity.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376101/normal_6001f803e3be1.pdfIn PDF document text
    • http://toppiksnack.xyz/18687503124rnb2y.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/dicgey5/last_day_on_earth_survival_para_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/idge3jb/talking_cat_app_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/cjchagg/stack_overflow_careers_visa_sponsorship.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rafetomobu.rf.gd/starter_checklist_form_2016.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_off0000bb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB92 5600 bytes
SHA-256: 0aa58f6650988db60ce79c922c02d330278e066315be40b249de1dfeff8e41bc
font_01_sfnt_off0000ce82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE82 10104 bytes
SHA-256: b4f0ceb7bd44653bd37e08986e8b5167424adeebce17c7e6ae7b05cd193d85b6