Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41192a7f2de250a…

MALICIOUS

PDF

71.1 KB Created: 2021-03-05 07:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 24bc85c5c58f3a224f4535e15686d799 SHA-1: 71d2e2cd407ff07c49e7aac2fa5959fc36fb1f50 SHA-256: f41192a7f2de250a802535e5a0c052f18557a422ad3dbf398a28f29ddd0349b7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/award?keyword=primal+power+method PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373505/normal_603e2a1c1ab93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_60152afb9e45d.pdfIn PDF document text
    • https://giretalude.weebly.com/uploads/1/3/4/6/134677333/mibax.pdfIn PDF document text
    • https://buzikapafopix.weebly.com/uploads/1/3/4/3/134375334/levipimababor_tupevu_wuvanedatajoku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527747/normal_603de0e4a93a2.pdfIn PDF document text
    • https://devomideribura.weebly.com/uploads/1/3/4/4/134401990/koxononik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411926/normal_6029efb750bd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459937/normal_5fe597b114335.pdfIn PDF document text
    • https://diwoxine.weebly.com/uploads/1/3/1/8/131872021/5255357.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e6e31949-ba74-43ae-8e0c-2243355e89fd.filesusr.com/ugd/69e259_1093608cac2240569348c1332fa19c38.pdf?index=trueIn PDF document text
    • https://9d3edb37-11ce-4d87-b861-4f8d850d55a0.filesusr.com/ugd/0d2aa0_5255922c77964403b451bc286c43a05f.pdf?index=trueIn PDF document text
    • https://71da2aa5-51c3-4f2c-ab18-08bbbad20131.filesusr.com/ugd/d216cb_61ddf64043784975b98681a57e6a1bfb.pdf?index=trueIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_4825d4feed6340a8a143a7b6e3a5e27f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/makufimalozex.pdfIn PDF document text
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_ba2814895c3048e59ef4169aa225d9ec.pdf?index=trueIn PDF document text
    • https://0108a07e-94d6-443d-bfa7-575dd38852ad.filesusr.com/ugd/756a01_e6c86461ff2547b0aee3b2512b6c9c0b.pdf?index=trueIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_77ccb0702e9e41709c6f99ef55ac06f3.pdf?index=trueIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_2edfdc78ca2d49358d74d99edd6d5c8e.pdf?index=trueIn PDF document text
    • https://0f4267a5-27df-427f-b7ff-de3c6d4a4cd0.filesusr.com/ugd/9e4921_36f6428ba80045f682165e48d42cc4ac.pdf?index=trueIn PDF document text
    • https://6db1e9a2-4282-4636-8d41-de07325ad911.filesusr.com/ugd/d97b38_9647a38441cb48628a2f7fddf907d241.pdf?index=trueIn PDF document text
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_445f5469ed34495bb2cf24e173b1b894.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/jaisi_karni_waisi_bharni_video_gana.pdfIn PDF document text
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_26aff539f7454625828c988f7e1495c8.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_off0000da93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA93 5116 bytes
SHA-256: a8c4ac5eb03b7880a2dcf73e722ff75795f55ed8a0a6ec7dda00dde11fc55d95
font_01_sfnt_off0000ebd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD5 10440 bytes
SHA-256: 1e28d21b0c821ffd6790856c4e3433db0fedc3d34420162ddb6925c8ca6b1a32