Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd351e62db3eac89…

MALICIOUS

PDF

75.3 KB Created: 2021-03-06 00:23:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 78d29b02a2bb37ed3c3a009ae505a501 SHA-1: 0d96e9dc4ac2f04ea44325c9c4f0df4cd9b76afb SHA-256: fd351e62db3eac8966b471a91e7a2c2926cb903e92dfb46006ed5766cf73df1d
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://maypoin.ru/strik?utm_term=how+to+fix+condura+refrigerator+not+cooling PDF link annotation
    • http://onlinesos.tech/537821863534dhgk.pdfIn PDF document text
    • http://erse.xyz/pumukinanututujerosaxagor3ctc.pdfIn PDF document text
    • http://okstore.info/ejercicios_de_formacion_civica_y_etica_segundo_grado_primarial9fdh.pdfIn PDF document text
    • https://gadujixefanupu.weebly.com/uploads/1/3/1/1/131163635/33ed9539c8d4eb4.pdfIn PDF document text
    • http://lirepenepubejix.iblogger.org/89357613059.pdfIn PDF document text
    • https://wavixozuxukoreg.weebly.com/uploads/1/3/1/3/131380445/2cbfadc05ff7d5.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/c94080c2-39f3-4bb5-a2ae-ed442d224082/the_toyota_way_ebook_free_download.pdfIn PDF document text
    • http://malajusojak.epizy.com/math_addition_1-_10_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0558ad2b-783f-4dfd-8405-5893bd4c4d99/what_does_parcel_collected_from_sender_mean_dpd.pdfIn PDF document text
    • http://rimutapewite.rf.gd/numagasefiteti.pdfIn PDF document text
    • https://c30b87d5-e38e-4f4c-8f61-e356d9eaafe8.filesusr.com/ugd/347120_d5d81ef5e7cf499caee5e761d78d77d3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/049fbe42-bfdf-439d-b907-8960a4bb4802/kozofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eda2663-630d-41b7-9621-d680d4f6fe75/mosavovuxeb.pdfIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_a3b07695f2e84b9889ae65131784e795.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a58f7b-f647-4492-a95b-fed93bb64444/80304443315.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_off0000eab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB8 5132 bytes
SHA-256: 4a20155632985ea0c780a586d2b75cd51e92a456292799772ef70824cd3887a3
font_01_sfnt_off0000fc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC53 10568 bytes
SHA-256: 412268b8bae27f2bcb4ca0344a4f12506a4ddfb8652e648f49759dc2a0458797

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