Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e10bc78d8dee144…

MALICIOUS

PDF

68.0 KB Created: 2021-03-09 21:56:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fa0411c062634340c8273c24a6c3df0c SHA-1: 7c6396c2a3166aef79ab97c0e6074b1b500733c9 SHA-256: 3e10bc78d8dee1448d271dc03a127a1747699aa6b0d033cb59bb7ded50b1c54e
186 Risk Score

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://seumenha.ru/award?keyword=arabian+nights+book+in+gujarati+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469640/normal_6036c37e7ef20.pdfIn PDF document text
    • http://alkim.xyz/xutotatu3pm7j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417808/normal_5fe0332872252.pdfIn PDF document text
    • http://floradoma.net/clarion_car_audio_bluetooth_how_to_connect3yq4c.pdfIn PDF document text
    • http://topcreditcheck.info/43081745012df6ez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457320/normal_6015f379730ac.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/poxowinutitvhzml.pdfIn PDF document text
    • http://servicesforsupport.com/giratodamufu7brp6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d09251a9-b09e-4077-8ccb-24037f005f7b.filesusr.com/ugd/a6ce17_faa7017ec10a4ecebcb6f847f9b6797d.pdf?index=trueIn PDF document text
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_f6cef279abc24f3384b5789f37a0ad1b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d1e99b8-f8b8-46b9-833c-0ce9a1d7f619/nulitazuxuniwutiwimatalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1938e76d-0997-4b85-94d4-edd25440e0ee/how_is_annual_leave_calculated_in_australia.pdfIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_5c4f924b1d254d478975e4630465fd18.pdf?index=trueIn PDF document text
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_d644cb3bd5d34e03a2ba37dca6985d62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8deb3d60-fdfb-463c-9bc2-093b890a9524/what_do_vibrant_dreams_mean.pdfIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_b83093875a9842ff82e7a33570858b00.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87b8997a-7f20-4f4f-a014-7cd885cd998b/89518219419.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f747200-ceed-42dc-bfac-b8f9795767b0/58323364933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcf35b6c-f937-47ff-b13c-46fb1503ee19/76153293263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988df1f7-91ab-4d3f-a002-19d866ce1d9a/lyman_reloading_data.pdfIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_90ea7f4fec2e451b8d1a66d837b49b21.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ee1cb2-9e8a-415e-a8d1-c3e4faab9346/marujofiruwu.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_70cb0284e43f4186bf24935f551eef72.pdf?index=trueIn PDF document text
    • https://8488b7ac-84bc-45ae-88ed-26841205fc59.filesusr.com/ugd/7cda3c_e8bf2b6517d0427f80527f638a7ede73.pdf?index=trueIn 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_off0000cc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC86 5540 bytes
SHA-256: 717d9448fe6e2023c2b791a7b0ca3e75685bf423ffc218db3bd352a20d7d7743
font_01_sfnt_off0000df5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5C 10300 bytes
SHA-256: c90c483b6d861d7e27793381dc6db7166c13bed674ead60d7cc21f64f9e6d3f0