Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a09ef8e3610467…

MALICIOUS

PDF

79.4 KB Created: 2021-03-17 00:15:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9adf64dc540f4016a080fe502e3b6e2d SHA-1: c88f8c320f8466315dfa7c3063e36ffcaea326e7 SHA-256: 12a09ef8e361046733054629de5c8609a1d6433ec85a9aafcff5ea8442790bf7
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many pointing to disposable or suspicious domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on low-reputation hosting, likely to redirect users to malicious content or phishing sites. The presence of JavaScript, indicated by the T1059.007 technique, suggests the PDF may be attempting to execute malicious code or exploit vulnerabilities.

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://xezojetit.ru/wix?keyword=purevpn+apk+android+tv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420748/normal_5feb6be45be1d.pdfIn PDF document text
    • http://buganowugam.iblogger.org/libro_el_par_biomagnetico_dr_isaac_goiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_6027b775d387f.pdfIn PDF document text
    • http://kogegoleteneka.iblogger.org/standar_nasional_akreditasi_rumah_sakit_edisi_1_2020.pdfIn PDF document text
    • http://xevidome.iblogger.org/nozomedomopazapedomupi.pdfIn PDF document text
    • http://igme.site/93053135037g89tt.pdfIn PDF document text
    • http://ecoterritory.store/dauber_dawgs_activity_sheets4b3my.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tudavoje.epizy.com/pebexofuxaxuzulezafuwow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab2cf0e-1a78-4280-a162-2a5bfb3d11a6/cant_see_cursor_on_lenovo_laptop.pdfIn PDF document text
    • http://dorizoki.rf.gd/text_adventure_game_android.pdfIn PDF document text
    • http://dunugamufaj.epizy.com/banks_regulatory_compliance_risk_assessment_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6d79a0-8360-485f-9650-f36682490a47/sex_and_the_city_tv_show_samantha_jones.pdfIn PDF document text
    • http://faminosokaru.epizy.com/kabbalah_para_principiantes_gratis.pdfIn PDF document text
    • http://xozumuzexo.epizy.com/arret_cardiaque_causes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37fd8b4a-8565-4b39-9575-e859bc228793/is_newsmax_tv_on_xfinity.pdfIn PDF document text
    • http://nabarosurugi.epizy.com/nijuxijozofazafomudisoxid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA46 4868 bytes
SHA-256: 7c6a44e381a21bea43188295a585b6201f059fa1bc0313968941b86591e586d1
font_01_sfnt_off0000fae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE2 2660 bytes
SHA-256: 3576dd373b651515f47e23d31ed66261cdf4600bff3365b97b89943213537ffa
font_02_sfnt_off0001064d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064D 13036 bytes
SHA-256: 71b1fe36ae670ddb8afa4c62a3c87bcc2b7b564a74326f859493240609e34ca6

Open this report in the interactive analyzer, or submit your own file for analysis.