Malicious PDF — malware analysis report

Static analysis result for SHA-256 987ebe73c3c987d5…

MALICIOUS

PDF

70.9 KB Created: 2021-02-12 08:27:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 532ce489caef95f641452fe463f68f72 SHA-1: 58713f80e4f25f2b230d947a0229eaeac7265e5d SHA-256: 987ebe73c3c987d5d715ee22d5c7ef14b2bf2fac403a6d92cf730a53f5da67f1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=animal+cell+worksheets PDF link annotation
    • https://cdn.sqhk.co/ramowejub/vvxibyv/20972785073.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454562/normal_5feb3e8c3b68b.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/giqihig/starting_over_lyrics_chris_stapleton_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454808/normal_6008cd88ed81e.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/ahcjaMD/46276131308.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/0ihijhj/nisipunizujijiwipoxefi.pdfIn PDF document text
    • http://linawoninup.22web.org/tulebapiwanumodal.pdfIn PDF document text
    • http://leaninrzpd.site/understanding_pathophysiology_6th_editioniislo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_601b1bd62dea2.pdfIn PDF document text
    • http://ompala.store/the_nightingale_movie_dakota_fanning_trailerxcjbk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://julefedego.rf.gd/information_security_mcq_questions_and_answers.pdfIn PDF document text
    • http://wesukudepabu.epizy.com/foloregotufoza.pdfIn PDF document text
    • http://pasexojubil.epizy.com/kalezexerajariba.pdfIn PDF document text
    • http://sipomivizipe.epizy.com/asymmetric_information_problem_set.pdfIn PDF document text
    • http://xituduriximujat.epizy.com/apa_6th_edition_referencing_style_manual.pdfIn PDF document text
    • http://fokawodi.rf.gd/redux_form_dispatch_value.pdfIn PDF document text
    • http://sevetise.rf.gd/zatunewo.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_off0000db9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9A 5184 bytes
SHA-256: 37ed4f28aa7f73a5f7dcb849621664d19dd33d50375188df614ff4a7ddd8cac4
font_01_sfnt_off0000ed19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED19 9952 bytes
SHA-256: 112d1b790e358c10d586b234551f84589ce14d9c3fc261933093874e30dab520