Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0f413ae744ff6d…

MALICIOUS

PDF

72.9 KB Created: 2021-02-14 06:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0eb85aefff71413b890436d5c7fc87d4 SHA-1: 21231a48fcea7c78f075f1dedcd7b63d515ec6d0 SHA-256: 1d0f413ae744ff6d4315f88cfe0d71b5f807844c13b160be4e2389a793dd7f49
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/wix?keyword=samsung+blu+ray+3d+surround+sound PDF link annotation
    • https://difanewoxapazu.weebly.com/uploads/1/3/5/3/135321324/4832135.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/xofewemasa_vomotigajis_tidodalo_lizowive.pdfIn PDF document text
    • https://biwamuneluzotip.weebly.com/uploads/1/3/2/6/132696598/fubisigap-tosebize-xanawidu-wiwilolavo.pdfIn PDF document text
    • https://wixevilit.weebly.com/uploads/1/3/4/8/134873569/girupixuletarav.pdfIn PDF document text
    • http://megahit.space/lanabetemoraziz38i.pdfIn PDF document text
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/roledo_guveburuv.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/5942421.pdfIn PDF document text
    • https://kijujiwovijuk.weebly.com/uploads/1/3/1/4/131453096/6847350.pdfIn PDF document text
    • https://nimadelafux.weebly.com/uploads/1/3/2/6/132695392/631838.pdfIn PDF document text
    • http://paksorond.xyz/advanced_systems_automation_limited_annual_report99e4j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473947/normal_6013bb0ad6adc.pdfIn PDF document text
    • http://mexicotop3.xyz/ksp_1._8zxy8a.pdfIn PDF document text
    • https://nefolebar.weebly.com/uploads/1/3/4/4/134400051/nexuvesujidif.pdfIn PDF document text
    • https://fegemuvu.weebly.com/uploads/1/3/2/6/132695633/6785956.pdfIn PDF document text
    • https://mikatafa.weebly.com/uploads/1/3/1/3/131398449/5b1303a.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/satuja/new_animated_movies_2017_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/kepulanuzowof.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/jatajigoxajalamekenuwenut.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_off0000e029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE029 5656 bytes
SHA-256: 16a99ea9f69a1c8e9285c9de9df6a94d4c05b24a23bcf9d0e61ce8ff3766f223
font_01_sfnt_off0000f354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF354 10264 bytes
SHA-256: 3855f294199ac5b6ede1ada6bd68da8d82e03c7d77394f97e0970be7afeead92

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