Malicious PDF — malware analysis report

Static analysis result for SHA-256 730dff30023f459d…

MALICIOUS

PDF

72.0 KB Created: 2021-02-21 04:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 172ad1d7897b8f453c5b600561d8d9e7 SHA-1: 1bfb6e2c933be0ca200a6f89e6009ba89bf20f1b SHA-256: 730dff30023f459d6d48e54264e5c443b022fecf68962f483d7857a4cdde0d71
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://jottigo.ru/wix?keyword=douchebag+workout+2 PDF link annotation
    • https://tafanoxuxirugo.weebly.com/uploads/1/3/5/3/135327873/8606759.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/iaLihhj/rawezitub.pdfIn PDF document text
    • https://rafopovuweke.weebly.com/uploads/1/3/2/7/132740485/ziregonofama_kesogiwadupaz.pdfIn PDF document text
    • https://sutesesa.weebly.com/uploads/1/3/4/8/134871168/78b6fc5a086a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5fcacdc078681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404980/normal_60247a6c72386.pdfIn PDF document text
    • https://segugunopat.weebly.com/uploads/1/3/1/3/131381921/zikovefuvoratuzanog.pdfIn PDF document text
    • https://cdn.sqhk.co/bovutolomevo/hdjfqif/lesson_plan_free_fall.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/WjhKqJz/globe_at_home_login_app.pdfIn PDF document text
    • https://nupepapuk.weebly.com/uploads/1/3/1/4/131484133/f75fc9168.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423427/normal_5ffb92212aa3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503524/normal_6019f6d43cfaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/jid779N/ripuwevedumojodado.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawitaxug/Yde6hiU/modopewevekakit.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/dopugaxelelema/are_low_cost_spay_neuter_clinics_safe.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/rirudonitumowudal.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/53910270811.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_off0000deb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB5 5276 bytes
SHA-256: cf94effd7e612bdc28ed8a6e537f2df33d793e89da801309c0f1274c763972a9
font_01_sfnt_off0000f0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 10112 bytes
SHA-256: bab29bbf54fb79fcdd621c3c480592a0814f4fd046cef4b1211178f35d7dc522

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