Malicious PDF — malware analysis report

Static analysis result for SHA-256 291d1bdf19b1dc9a…

MALICIOUS

PDF

72.7 KB Created: 2021-03-15 15:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 06cb7ff22df6e586160a97c3c34e9b1b SHA-1: 3d4bbc8d9d83d48bb9aa2e48f7d1ff4318baaf02 SHA-256: 291d1bdf19b1dc9a1d61c03327317a70ee65973c45773997f4f2fb00b119af0b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jumiwimov.ru/award?keyword=bodyweight+exercises+to+build+muscle+pdf PDF link annotation
    • https://zolivapodi.weebly.com/uploads/1/3/5/3/135313307/jibepijoneg.pdfIn PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/4698407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380086/normal_5fd9bb42ad478.pdfIn PDF document text
    • https://porovepo.weebly.com/uploads/1/3/4/5/134527374/22e66172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_6013253f28b28.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/barefoot_investor_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_a04f97642ef84fe485919a939cccb1b2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/77137258-b918-4ddf-a0d1-0a4d6a69ea14/ropijaxetubofabepuxezivun.pdfIn PDF document text
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_bcdc60d9bba04c66a0159479a6803c65.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f3b517e-db94-4a3e-aeb4-e6dd454dd475/do_elena_and_damon_sleep_together_in_season_6.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/sign_of_the_beaver_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4ebe74a-bf55-47b5-9dca-bc1e60c4315b/robert_collier_letter_book_public_domain.pdfIn PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_ca5368c2b8e045f08a9a7e9a0fffe906.pdf?index=trueIn PDF document text
    • https://336ddc11-c37d-4cd6-9685-7accad2975f7.filesusr.com/ugd/479fa9_87b2cd87c55d46ac81ec9c596a123b82.pdf?index=trueIn PDF document text
    • http://bujekotu.atwebpages.com/what_is_audience_in_creative_writing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98ff731-34fa-4b1d-89d3-4dc1f4088e05/what_to_prevent_high_blood_pressure.pdfIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_95464da07c89415b92623e44de22c9ac.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/98f26123-f94f-436d-85f8-b8ba5b9c3e55/motonegapara.pdfIn PDF document text
    • http://xirexadugimog.atwebpages.com/picadura_de_chinche_besucona.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_off0000dec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC9 5812 bytes
SHA-256: ed19b87c55d1afe9fbb8764beb36e0cd5a86c896992c8691e38e195266546bf9
font_01_sfnt_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 10400 bytes
SHA-256: 517d3d6af8b61b4aab4b18819de98744f673877e909b837dd72dfcc4241277f8

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