Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c433f151c2a4033…

MALICIOUS

PDF

46.8 KB Created: 2020-10-22 08:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 3f5e420386c44e0e79e111e7aa31d224 SHA-1: a20d4158f8c5c4b56a8714b5e14dbc5b90a49ba7 SHA-256: 5c433f151c2a4033d48945f98bf45bf47f75972ecdda967eee4319532fdce6d1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/aws?keyword=jesus+de+nazaret+papa+benedicto+xvi+pdf In PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/kewoxisibe_vukuvirezikopat_zupite_xuguna.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/5848962.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/xeledax-dawevupexo-sumulawofebot.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/reziw-rarego.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369525/normal_5f8cec426a257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f8ec4d648d16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5f8a4e39395ca.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/degebexugetumiz_derivarupokazi_vigawogu.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/roxefobenabekipila.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/mutukibof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f87638946932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f8a3dbfc6604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5f90fc95b36ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f8e1220c1593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377902/normal_5f90c7de75e7e.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/tadovu/bin_sachivalay_exam_paper_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/fazabanajedosaz.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/intranet_vs_internet.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/collateral_management_michael_simmons.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/liweruderabo.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/12059522741.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/gixilawupozexalabop.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/20833886110.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/bhagavad_gita_chapter_12_tamil.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_off0000659c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 5308 bytes
SHA-256: 12c87e44532acd9141c96277ceb56ded0005fc22426b2244c4a107179d025836
font_01_sfnt_off000077b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B2 11504 bytes
SHA-256: da4c444b43b16b3bc9a4428ecc7587bf508d17b380cdbb6ec1b5baeebd41d02e
font_02_sfnt_off00009d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0A 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230