Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6b7496daaff096…

MALICIOUS

PDF

71.2 KB Created: 2021-02-15 12:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b9e11fde0acff65295046b8deecc4601 SHA-1: 0c89011c93a357d2c40809d9ef4dddfde2af6c46 SHA-256: 6a6b7496daaff09670a219f674028a50f0d5bd05be4419fa8aaa7b11ca0464e0
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://lasezafokovopar.weebly.com/uploads/1/3/5/2/135294620/gudopikowilawodemo.pdf.
  • 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://leonvi.ru/wix?keyword=coordinate+geometry+worksheet+with+answers+pdf PDF link annotation
    • https://lasezafokovopar.weebly.com/uploads/1/3/5/2/135294620/gudopikowilawodemo.pdfIn PDF document text
    • https://kimuremosov.weebly.com/uploads/1/3/4/7/134732255/sovukedudabisowilo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5fd350bd26193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374860/normal_5fd646b5c63f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420761/normal_5fee69da53d50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391024/normal_6005207f9971d.pdfIn PDF document text
    • https://kunoloxudiruk.weebly.com/uploads/1/3/4/7/134767428/foxexumazudax-pitevuxapedad-genogega-fafiniwevuvoj.pdfIn PDF document text
    • https://pigokujedaxe.weebly.com/uploads/1/3/0/7/130740563/ruzekizubawa.pdfIn PDF document text
    • https://kimodoximotoden.weebly.com/uploads/1/3/1/8/131856266/wadifag_kupirevapow_nutokozetujixok.pdfIn PDF document text
    • https://medivurufif.weebly.com/uploads/1/3/1/4/131407406/libapilokesafekalo.pdfIn PDF document text
    • https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/3620fcbb75b06.pdfIn PDF document text
    • https://sipebiwamedewor.weebly.com/uploads/1/3/4/7/134707389/kebetomudimosi-zoxikogeramoxu-rarimiba.pdfIn PDF document text
    • https://pebujekug.weebly.com/uploads/1/3/4/3/134380671/kowigasunizawirula.pdfIn PDF document text
    • http://sabuxaki.22web.org/jai_ganesh_aarti_audio_song.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/ighg8gh/zivopurubinubupadag.pdfIn PDF document text
    • https://zamokofoviwikaz.weebly.com/uploads/1/3/0/8/130815095/1606a1441deb.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/jfjgGge/jujumojixurogepifavej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poresiz.epizy.com/60161899474.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_off0000d958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD958 5584 bytes
SHA-256: f475e5e74c37aabcb1115d6f9f51f9502449ed8028e9c6a81572b46f1db85d84
font_01_sfnt_off0000ec46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC46 10272 bytes
SHA-256: 7e61eae4cdcd6b5efccf4e8b49ebb5a31449c060728771d1ab61510464f1bece

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