Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff7fd0ff050e636…

MALICIOUS

PDF

73.2 KB Created: 2021-02-20 13:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1670fed3d4a01f46873a91fee24e8b72 SHA-1: 05c86282a28562217c75b689c02c0a38782bca6f SHA-256: 7ff7fd0ff050e6365d8a38162c60275894ec2f0fde8e1897c1ee9a33e8edbd13
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=kitchenaid+superba+ice+maker+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_60203771252f7.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/bulavexolaxij_wokivimo_kilinixemew.pdfIn PDF document text
    • http://originalhallyu.com/jitoguxamodopelokib8z9py.pdfIn PDF document text
    • http://zogagutezuwe.22web.org/zefewafavebudete.pdfIn PDF document text
    • http://biotringel.shop/83539368931xq91c.pdfIn PDF document text
    • http://newberginvestmentproperty.com/plain_city_utah_directionszs9lt.pdfIn PDF document text
    • http://lazerepil.site/metumohel0v.pdfIn PDF document text
    • http://moreprodukti.com/55973690646wqzez.pdfIn PDF document text
    • http://idealica-it.website/nimuzapowumojefijemxetqc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/tukom.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/37131523989.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/sulusepigutizuwikinad.pdfIn PDF document text
    • http://bifuganikidaliv.epizy.com/kagojidipibovitij.pdfIn PDF document text
    • http://derasowuras.epizy.com/the_standard_apartments_scottsdale_reviews.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_off0000e17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17C 5484 bytes
SHA-256: eb3bd367fe1d145f5bd26ae2623a09069ee563378dab853f8c731610b7f9993c
font_01_sfnt_off0000f3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F0 10488 bytes
SHA-256: f278a4e3d99afc13f374a05d93738ca78e29ba7338607160e398563b55621423