Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d12d4f1eaac6c08…

MALICIOUS

PDF

75.7 KB Created: 2021-03-01 18:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 91faeef304cc014fa838f3d02634f1ad SHA-1: 5c1bea029925878488a02d675176077c89972a80 SHA-256: 0d12d4f1eaac6c08e1c2ba2fb71cb387025825b15742931d962e6206dcd4c047
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it functions as a link farm on disposable hosting. The embedded URL `https://jumiwimov.ru/award?keyword=how+do+i+pickup+my+walmart+grocery+order` suggests a phishing lure related to online orders. Although no scripts were directly extracted, the PDF structure and URL usage are consistent with phishing or malware distribution campaigns.

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://jumiwimov.ru/award?keyword=how+do+i+pickup+my+walmart+grocery+order PDF link annotation
    • http://xuxetosufuzo.getenjoyment.net/acido_fosforico_formula_di_struttura.pdfIn PDF document text
    • http://rujisuki.mygamesonline.org/human_trafficking_in_the_united_states_statistics.pdfIn PDF document text
    • http://suziterunedoloj.sportsontheweb.net/the_best_game_company_logo.pdfIn PDF document text
    • http://manovina.mypressonline.com/fanan.pdfIn PDF document text
    • http://reduslimitaly-official.site/does_moto_g_2_support_4gsk8r7.pdfIn PDF document text
    • http://tapakidi.22web.org/ludogiri.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/66439122763.pdfIn PDF document text
    • http://dejenenipanoz.22web.org/67297045370.pdfIn PDF document text
    • http://smartbright.club/845245386399ipj7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botizadis.rf.gd/spanish_vocabulary_activities_for_high_school.pdfIn PDF document text
    • http://jatowikuv.rf.gd/xuwutasukowaxedabimatos.pdfIn PDF document text
    • http://zotubune.myartsonline.com/metupuxinoguredanatobixez.pdfIn PDF document text
    • http://fozajabuwipebo.epizy.com/jasajad.pdfIn PDF document text
    • http://fasizoj.rf.gd/erlkonig_schubert_sheet_music.pdfIn PDF document text
    • http://kepipejesa.epizy.com/dajoju.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_off0000eb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB56 5432 bytes
SHA-256: c4ae6356bdc42529e5fb1144f7b3922b4675763f4760a31db6d1b1802c3e39d9
font_01_sfnt_off0000fdd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD9 10412 bytes
SHA-256: 628cfb67747f784ee600d4a345a55d3f815e6a5fbcfee4dda9177311f413ce70