Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ded5c9ef7deb87…

MALICIOUS

PDF

77.5 KB Created: 2021-02-26 14:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9be17afda8af44647d93f7b569d5d215 SHA-1: 2137ef2b533c5df599a75555015e4c0d46a5aea6 SHA-256: 14ded5c9ef7deb875f42eea9a8d81b73e8c260eb7ce3e24a49dabc52ec1aaa23
196 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.
  • 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://lozipotod.ru/wb?keyword=tipos%20de%20planes%20de%20emergencia%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484814/normal_60265042ddda1.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/soruvipu_febisesuzeda.pdfIn PDF document text
    • https://jekaboda.weebly.com/uploads/1/3/5/3/135398795/4736022.pdfIn PDF document text
    • http://relax35.ru/egg_biryani_recipe_in_tamil09ai1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408583/normal_6006e5777ea23.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/likoso-kekemirekul.pdfIn PDF document text
    • https://sizadefo.weebly.com/uploads/1/3/4/3/134381744/1988502.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/kufunudjkbc.pdfIn PDF document text
    • https://memekofonaw.weebly.com/uploads/1/3/6/0/136054412/9278387.pdfIn PDF document text
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/xoresefog.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/sepawi/54967192191.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/5570559697.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/motorola_talkabout_manual_t5700.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/lysistrata_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/6371775993.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_off0000f1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BC 5424 bytes
SHA-256: 70686f20d7e0d60eee5117ff1f246f1df6d3a94402c1bf526c2b9f9fa3c28188
font_01_sfnt_off00010419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10419 11544 bytes
SHA-256: 635df3d6fe46e9735e7f6ee1bf5e94952d02f7e5f20ecc92da2217980acf7862