Malicious PDF — malware analysis report

Static analysis result for SHA-256 de49e722e5adf8dc…

MALICIOUS

PDF

96.5 KB Created: 2021-06-07 09:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 179a80fb4b6b07c4e6409f20be186275 SHA-1: 48f82f8e7413452ea994ff195c951781d3e78760 SHA-256: de49e722e5adf8dcfa0827fd8dbe0d6f8d9863d74344d1b39e5428d406700764
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The primary URL, 'https://coretry.ru/pbw?utm_term=free+download+canon+lbp+6000+printer+driver+for+windows+7', indicates a lure for downloading printer drivers. While no scripts were directly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://coretry.ru/pbw?utm_term=free+download+canon+lbp+6000+printer+driver+for+windows+7 PDF link annotation
    • https://ravuluzezufex.weebly.com/uploads/1/3/5/9/135956854/78281d1.pdfIn PDF document text
    • https://worejefaluki.weebly.com/uploads/1/3/4/4/134456715/vopudiga.pdfIn PDF document text
    • https://wapixetisabin.weebly.com/uploads/1/3/4/6/134685373/2980060.pdfIn PDF document text
    • https://gakefutafo.weebly.com/uploads/1/3/0/7/130739004/budawoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_606030a8139b4.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/1586582.pdfIn PDF document text
    • https://sijujufe.weebly.com/uploads/1/3/4/6/134696532/3170189.pdfIn PDF document text
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/53e6a8.pdfIn PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/wosaxi_kaxunigoke.pdfIn PDF document text
    • https://rulukipa.weebly.com/uploads/1/3/4/3/134329123/2586335.pdfIn PDF document text
    • https://norobeso.weebly.com/uploads/1/3/4/5/134586389/2d6337a688.pdfIn PDF document text
    • https://gatodewa.weebly.com/uploads/1/3/4/6/134627503/pemotagawemoxu.pdfIn PDF document text
    • https://jegivobepumo.weebly.com/uploads/1/3/4/4/134444156/mudugorexutiriv.pdfIn PDF document text
    • https://bojotipawotos.weebly.com/uploads/1/3/2/6/132681617/bitojosevigurumaxiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500893/normal_5fd3102a95111.pdfIn PDF document text
    • https://fekazivijiwawad.weebly.com/uploads/1/3/4/6/134687088/pawexupo-tajixumolup-pitujekoxufebam-bepuzekuti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jesababa.pbworks.com/f/capitalization_and_punctuation_worksheets_free_printable.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/f/how_to_do_a_voice_clip_on_messenger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ac542e-bc3d-4f8b-9be5-192453ecb252/jigufojogibuvobunol.pdfIn PDF document text
    • http://bopelijexuf.pbworks.com/f/soap_and_detergent_business_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c351abf1-178c-4467-a07e-07296defe94d/palabras_de_condolencia_para_una_madre_que_pierde_a_su_hijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d928a5e-da08-4d11-8034-4d84983ad0f6/notas_musicales_de_la_cancion_toque_de_bandera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5ff701-8fe9-48b7-adeb-3927ea3a03fe/the_essential_rumi.pdfIn PDF document text
    • http://litorabi.pbworks.com/f/rojamosid.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_off00013b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7E 5772 bytes
SHA-256: f77c9414518ee4b3d23e1435e301fa56ea242483e5d5d233448c6ed0f4e48cec
font_01_sfnt_off00014f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F53 10776 bytes
SHA-256: f3377c1c78caa90e7c3e48556edbafe193793bdb573ae61c6f48690dcbeaefb9

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