Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ba216ebc05b774…

MALICIOUS

PDF

50.1 KB Created: 2020-11-08 08:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c89010a6fa7df98323056487a72ad492 SHA-1: 494862aeb328390ae62b5609b7cf6c4f23ce3370 SHA-256: d0ba216ebc05b7740316c5167fbdbb06e74d942bf0de5a14515c1f2547ac4870
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://trafftec.ru/aws?keyword=physics+chapter+3+review+answers PDF link annotation
    • https://dudosixe.weebly.com/uploads/1/3/4/3/134323580/5353867.pdfIn PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/bumajalepe-xenexanafu-jomadunogupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_5fa6341134e84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369802/normal_5f914c8a7471b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_5fa75c4482870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465003/normal_5fa32b3265805.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/8e9448c9d4b87c8.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/5f7ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f872d5704c29.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/videgivud.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://s3.amazonaws.com/mupukesunobaga/big_head_basketball_unblocked_minimunch57.pdfIn PDF document text
    • https://jasobegofur.files.wordpress.com/2020/11/veruzavizotarelurib.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/51865908052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb73b6a-be67-43ef-b7a5-95d0410cf383/minecraft_how_to_fly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a2d508-9501-4240-b5c8-ba3a1ca2442f/sinukepute.pdfIn PDF document text
    • https://sirilab.files.wordpress.com/2020/11/wixasidivumazenogodoz.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_off0000774f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774F 5084 bytes
SHA-256: 4b1c3946bb406a8f7166759af123dfec7208b7c31ac033fecd899d1b0068cde2
font_01_sfnt_off00008899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8899 10756 bytes
SHA-256: b5a8ee61124cc689dc02a95ad8913e632f599bd0611eed113a4b9106350657c9
font_02_sfnt_off0000ad94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD94 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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