Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea36bd1039fd4cd4…

MALICIOUS

PDF

81.1 KB Created: 2021-06-12 18:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 910706920e6fc8d278fc7da3ca1151e5 SHA-1: a87eaaf8bc3887442239fe52d487726390c8ef92 SHA-256: ea36bd1039fd4cd47b44059654fbe47bb1e8a49e681c6d48e702abe3ff43629b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The primary external URL observed is https://oniceh.ru/pbw?utm_term=ore+finder+minecraft+pe, which is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://oniceh.ru/pbw?utm_term=ore+finder+minecraft+pe PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483336/normal_6004b57556038.pdfIn PDF document text
    • https://jibajupo.weebly.com/uploads/1/3/1/6/131636806/zunita.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fe4835c34dba.pdfIn PDF document text
    • https://tagojakiwuki.weebly.com/uploads/1/3/4/4/134444274/97d32c5fb0.pdfIn PDF document text
    • https://menajogatidufe.weebly.com/uploads/1/3/0/7/130740573/vupubik_jokekasinopisum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384323/normal_5ffaa9d0532ef.pdfIn PDF document text
    • https://febefadu.weebly.com/uploads/1/3/1/4/131453100/sotodoseko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464072/normal_604d7a3b6c831.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379220/normal_5ff97afda3549.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470409/normal_5fcb47282b296.pdfIn PDF document text
    • https://sevimuxeso.weebly.com/uploads/1/3/0/7/130739978/128390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426966/normal_606df6a8d3282.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/076ba72b-dd3b-47f0-8aa6-7a6163ffec22/22603163390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce19d10-9d2a-4e13-8a25-388f3be4d457/what_is_evolution_of_programming_language.pdfIn PDF document text
    • http://muxopal.pbworks.com/f/moultrie_xv7000i_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879f9bf5-de7d-4de4-b91b-95f107a1887d/46961231069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b437287-3cae-4b5c-b858-52623fcf30c3/chipotle_reward_code_honey.pdfIn PDF document text
    • http://togiwuvoze.pbworks.com/f/tobivivosinogoredi.pdfIn PDF document text
    • http://refarumiba.pbworks.com/w/file/fetch/145146597/3937359436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9a0905-d061-468d-9854-74d6ab3c402d/zezavaxob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 4796 bytes
SHA-256: e8be2333614515ad4b40e1e4b29bd93bbef9d10a5e25d2e7d2f5050940c25721
font_01_sfnt_off00010250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 11232 bytes
SHA-256: 4f0550b4bb81f4fb8c2db68002a55b154482dc2683a92247178f32dc94836a62
font_02_sfnt_off000128d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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