Malicious PDF — malware analysis report

Static analysis result for SHA-256 e267b6f42f290843…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 22:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b6a946da58e5e7fd60473df6757d53a5 SHA-1: 4afb5a3b36532725dacb7ee7be6e497380bc28d7 SHA-256: e267b6f42f2908434d7515a494a21536dfb7b3cf7b706210f24a2ccf1d1d5b4c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • 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.
  • 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://maypoin.ru/wix?keyword=cell+structure+gizmo+assessment+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5fd80d30cda90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471688/normal_5fc6d931be403.pdfIn PDF document text
    • https://malitizume.weebly.com/uploads/1/3/4/0/134097131/geluzuziw_gemijalejetu_gepisopotisif_jutalipafi.pdfIn PDF document text
    • http://opticsystem.website/81278260478865ca.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/zorejibiselitojoba.pdfIn PDF document text
    • http://about-igsupport.com/gozuzejegvmhxy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_5fe915a721a33.pdfIn PDF document text
    • http://reduslim-italia.website/tafosube1pprm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454811/normal_6010b3a74e8f7.pdfIn PDF document text
    • http://hallop.xyz/app_store_itunest03w4.pdfIn PDF document text
    • https://xatosupitoso.weebly.com/uploads/1/3/4/0/134018334/9271ef275cdabe.pdfIn PDF document text
    • https://velonifiwivuli.weebly.com/uploads/1/3/0/7/130739758/kaduv_rifizamuromovem_nowupevofusige.pdfIn PDF document text
    • http://babysampler.com/sentricon_always_active_manualwtslx.pdfIn PDF document text
    • http://natiral.space/gta_san_andreas_1._08_aptoidexb9o4.pdfIn PDF document text
    • http://adanakebap.org/50863085681r8rw2.pdfIn PDF document text
    • https://zonujonuwug.weebly.com/uploads/1/3/4/3/134309714/josaf.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/bokexizometun/volitumibetaxekewonolafi.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/lipid_guidelines_2019_diabetes.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/gukowilafuk.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/45267121431.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/83504814760.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/bobavat.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE4 5168 bytes
SHA-256: b4c7b7a456078519f486f81977120a33c268ddb5a4f6cc7aaea2c2a24c53aa17
font_01_sfnt_off0000cf6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6F 2048 bytes
SHA-256: 5bbfb71e7e79db7713d2dca3d61a529cd6bdf2162d19a91745b024a6fee9cfc1
font_02_sfnt_off0000d84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84C 10284 bytes
SHA-256: 2130f5546cfd77c4f148511ce774bd84713eb3203a18b664d0576431aa01574f
font_03_sfnt_off0000fb89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB89 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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