Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af3c359444e69f8…

MALICIOUS

PDF

71.0 KB Created: 2021-03-10 16:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 487a648ffe463e057a8bea0abaea0986 SHA-1: aadd3e1fc8a2b737979caab3dd5cdcd3d887061a SHA-256: 1af3c359444e69f831ce8868e30d1281f06ad2669ae1827b120186ce42504400
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=ejercicios+something+anything+nothing+pdf PDF link annotation
    • https://cdn.sqhk.co/mutuwatu/Gklc5ha/76912236221.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381737/normal_5fff22511010b.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/nidaj.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/48980146755.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474978/normal_5fe375181b9e0.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/igicdO4/word_family_list.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/N3hdeia/the_simstm_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/hegdfij/34076104060.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5ff5241bea45c.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/idiaqvo/xixezoravemune.pdfIn PDF document text
    • http://gaximivotekole.mypressonline.com/badulebipidid.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/mevuzokekenojab/creo_parametric_6._0.pdfIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_58deb11393f4481eb9a0264ade7935f5.pdf?index=trueIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_96220c7f1b9a4cac94ab2c27f57d5e58.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e994089f-fbad-47c3-84b9-211681d3c577/tijuximotomusab.pdfIn PDF document text
    • http://vunonam.atwebpages.com/duxer.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/pathfinder_template_advanced.pdfIn PDF document text
    • https://9eff4bf0-55a5-42b9-a65a-250f23c32afd.filesusr.com/ugd/80978b_b3bff20a78df4165b2776c95f9229fa4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/zinagejo.pdfIn PDF document text
    • http://zilowovuv.atwebpages.com/31881669841.pdfIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_d4a59e307da04947be36036941c53840.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gofiguj/when_to_use_raw_pointers_over_smart_pointers.pdfIn PDF document text
    • https://315736c7-1030-4200-8d24-05c9f4951019.filesusr.com/ugd/d19ca0_b12faaaefc554bfa9edcf3b2563215b3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76da8050-c764-4c26-a2c3-570e314cd9c8/all_the_things_you_are_chords_ukulele.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_off0000d8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F9 5672 bytes
SHA-256: 19ada1dbd430422be33bf4d5f2b1c4a6f56474b73938f39f4a290279aada76f5
font_01_sfnt_off0000ec2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2C 10004 bytes
SHA-256: 7a8804e59c5d55bd398b4cd2189dbf49a31186622841418ede0a57f6c2859687

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