Malicious PDF — malware analysis report

Static analysis result for SHA-256 0246df73edbacb3d…

MALICIOUS

PDF

70.6 KB Created: 2021-02-17 22:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 28dc84cf110136c84d73e6842262a130 SHA-1: eb3e3891e93739d44e2a55b4d5cc78139c8e9c1e SHA-256: 0246df73edbacb3d7325e973fb7a6bc15a8e1945a2c0668a1de351728f79d759
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://jottigo.ru/wix?keyword=fundamentals+of+biostatistics+pdf PDF link annotation
    • http://vukogosapejofa.iblogger.org/mygica_android_tv_box_remote_not_working.pdfIn PDF document text
    • https://sarejazaxixosib.weebly.com/uploads/1/3/4/6/134633098/8817032.pdfIn PDF document text
    • https://viferoxabuged.weebly.com/uploads/1/3/4/2/134235394/jozugisevapojele.pdfIn PDF document text
    • http://guzofegarakad.iblogger.org/genetic_testing_market_report.pdfIn PDF document text
    • https://vikerurinarifu.weebly.com/uploads/1/3/0/7/130776567/gizibaki.pdfIn PDF document text
    • https://kobuvedubi.weebly.com/uploads/1/3/4/0/134017802/vinaxemibozu-nexapewore-zerivikude.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_5fd7f2a7569b0.pdfIn PDF document text
    • https://sutuvawubu.weebly.com/uploads/1/3/6/0/136055635/1603107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465397/normal_60289897bdb83.pdfIn PDF document text
    • https://fowerorizer.weebly.com/uploads/1/3/1/8/131856705/ruguribuwal_bafobadi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497110/normal_5fffcd224beed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xobixipopesis.rf.gd/betrand_peto_sahabat_kecil_lagu.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/3468744699.pdfIn PDF document text
    • http://metusajixano.epizy.com/aftermath_1994_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/android_11_r.pdfIn PDF document text
    • http://figijosi.epizy.com/24816048860.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/peroxidase_enzyme_activity_lab_report.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_off0000d63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63F 5300 bytes
SHA-256: 06e11c9370cff4be220966418cec5e38b94387ceefee0f3ab75cbda0f99a7454
font_01_sfnt_off0000e833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE833 10936 bytes
SHA-256: b0d27c02345e8f1d7de3cb476387a3fd20426e8015212ea04fd8dabb6c1426c5

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