Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d8d5eecb71536a…

MALICIOUS

PDF

76.6 KB Created: 2021-03-30 11:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 305a0ba6d500f8656ca1f547a1901e5e SHA-1: 9540e90aa0c25d34eb6c32eb371ca63ee1d3b81f SHA-256: 69d8d5eecb71536aabea3ed3777adc588df824cf34e07e097ebb318d0847b418
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/aws?utm_term=cuantos+tipos+de+esquemas+existen PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468831/normal_603cbfc05bbed.pdfIn PDF document text
    • http://bofidozulemu.iblogger.org/kuberop.pdfIn PDF document text
    • http://lerimofo.mywebcommunity.org/mapa_geologico_de_colombia.pdfIn PDF document text
    • http://bokaxakoz.sportsontheweb.net/69085060603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480876/normal_601a632b5af0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408355/normal_603bdc95eaaf5.pdfIn PDF document text
    • http://sumagezemorewo.22web.org/animal_names_in_kannada.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/clasificacion_de_los_animales_para_nios.pdfIn PDF document text
    • http://tapopapebesawu.getenjoyment.net/is_attention_deficit_disorder_covered_under_the_american_with_disabilities_act.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3260d215-50e3-4d94-a402-a841505ee79b/introducing_second_language_acquisition_slideshare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/795e81f6-d663-4b60-b7e3-7ae03c8a5e85/71480265513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e046b1f-7f4e-4e70-8a3c-48eeb042cc7a/36058344880.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/46883838890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d23775e3-36f7-4722-90c2-2213a3c39681/rofelavemijixajofudok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9f4bb6-dede-4ff3-8fef-471fc481efdb/94692589307.pdfIn PDF document text
    • http://sekuwomexapa.myartsonline.com/21663150703.pdfIn PDF document text
    • http://demunoj.epizy.com/defamuvejuzejuner.pdfIn PDF document text
    • http://gorevifero.epizy.com/70211345818.pdfIn PDF document text
    • http://pujumek.myartsonline.com/58282551037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23dd1b25-8b31-42ed-9a86-7cff36d8dab8/7173820038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/471a3114-0bac-4f41-b319-0ecba94536ec/avital_remote_start_not_working.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_off0000ecec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEC 5076 bytes
SHA-256: e81a872f8255bb1c31d6e9e8b1877a367a57b447d3cb2150e5ae5282e650d9ae
font_01_sfnt_off0000fe1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1F 11740 bytes
SHA-256: ed68a7f04476da0c995a7b4d45f17fe6696ec45d922771c6d160862fc40cccde

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