Malicious PDF — malware analysis report

Static analysis result for SHA-256 d61f24ff3bc7f77c…

MALICIOUS

PDF

69.5 KB Created: 2021-02-21 08:38:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 47660dd31fb15677960f7e5b1226cd63 SHA-1: 00abc7a95f6d9e53c0dcb79eacf5cf6532352fdf SHA-256: d61f24ff3bc7f77cf01be1ccd4fd755a001f7731355335f3f7e896b3a112eb99
244 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
  • 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 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.
  • 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=precalculus+practice+final+exam+with+answers In PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/05137b8d87b.pdfIn PDF document text
    • https://boviseweduxiraz.weebly.com/uploads/1/3/0/7/130776594/9636795.pdfIn PDF document text
    • https://bowotile.weebly.com/uploads/1/3/4/7/134759747/bewefugelid.pdfIn PDF document text
    • http://qrettalq.online/414869190886ijt3.pdfIn PDF document text
    • http://iblack.space/jquery_button_onclick_submit_form2uk4r.pdfIn PDF document text
    • http://se-mrush.com/tamil_movies_hd_tamilrockersd1yus.pdfIn PDF document text
    • http://menbp.online/vazemalozo9zl20.pdfIn PDF document text
    • https://tezimapegimera.weebly.com/uploads/1/3/0/9/130968984/4988350.pdfIn PDF document text
    • http://9gusevshop.website/90517333414wt5y5.pdfIn PDF document text
    • http://4gusevshop.space/mojidipipozekogonotitaab58b.pdfIn PDF document text
    • https://modurofeg.weebly.com/uploads/1/3/4/3/134376635/vesaluvovumu.pdfIn PDF document text
    • https://norotenivepele.weebly.com/uploads/1/3/4/0/134042349/4236638.pdfIn PDF document text
    • http://heartcenteredequestrian.com/coleman_powermate_1850_generator_air_filterwrbfx.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/ifgoHbj/hmrc_contact_phone_number_paye.pdfIn PDF document text
    • http://ig-mediateam.net/nolitogovavugef9xnwt.pdfIn PDF document text
    • http://perfectiona.online/peg_perego_john_deere_gator_parts_listgemaa.pdfIn PDF document text
    • https://defelidiko.weebly.com/uploads/1/3/1/0/131070982/335947.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20A 5416 bytes
SHA-256: 5bbc1e556c181e3580a09dce72bbdd806737c04401cfa426fb87d5efe35f2d62
font_01_sfnt_off0000e462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE462 10644 bytes
SHA-256: 721a176e13af559b0817a7951f800acc7d3cf7d1689767d697902836c4a7e1ef