Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0bb78288429d85…

MALICIOUS

PDF

45.9 KB Created: 2020-11-08 12:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 61526a7c3ea52d10ffea05128c3800a7 SHA-1: a8d645ae5ba7fb6d8461a89c7a96ef1f1538d0e0 SHA-256: 4b0bb78288429d8510a1e369f345f19f427f39d3223a81e00c73a5a27391430c
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=stupid+monkey+studios PDF link annotation
    • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/bumunenat-levofunasopabo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372980/normal_5f88c5c4bf033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_5fa6753ca5baf.pdfIn PDF document text
    • https://bidoruwo.weebly.com/uploads/1/3/4/6/134651737/69fe1ad50dac6b.pdfIn PDF document text
    • https://saxuvelimeno.weebly.com/uploads/1/3/4/4/134480096/zuvujopevelagam.pdfIn PDF document text
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/tojerutu-rafalafu-labuxanezigixi.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/fopalew/lejuginawudabupuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/31846315461.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/raxuli.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/comma_splice_worksheet_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/draenei_paladin_is_very_good.pdfIn PDF document text
    • https://regafuxexa.files.wordpress.com/2020/11/67474142793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/998d1ddb-8e0a-4271-a7fb-0072ef222964/770285027.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off000062b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 6440 bytes
SHA-256: 2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb
font_01_sfnt_off000072ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AB 5036 bytes
SHA-256: c28b7612e6a884b18d120b09fe27bad3e5236b30ddfd23aba9a1e91186646944
font_02_sfnt_off000083ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 11472 bytes
SHA-256: d40492565739fac8f495ddfc8d27ef7927bf9c78b93f6a327da4c92a3e40bcff

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