Malicious PDF — malware analysis report

Static analysis result for SHA-256 95835798c0eed904…

MALICIOUS

PDF

35.3 KB Created: 2020-10-28 22:02:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6a0bfd39e7c0ba3d3d4b419ccd468946 SHA-1: 936cc1004d207becec2d949218fec93ed7a931b8 SHA-256: 95835798c0eed904e60bdeb39bab0d8eb1958a62b771911ccdb4a08bf8d726d2
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://cctraff.ru/pify?keyword=knee+pads+volleyball+mizuno In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5f962382df084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f966335cc3d6.pdfIn PDF document text
    • https://wijukipofijiko.weebly.com/uploads/1/3/4/3/134381856/jijiziwivasadog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8bf47d8283a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f8d24741e96a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383132/normal_5f94bdc6e4275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f97457f6b030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5f88c0a6c0120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8763c5f039f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f94f84fdbbfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004a01.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004a01.bin)
    • https://s3.amazonaws.com/gewisetug/bimubodirajisidob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/ankylosing_spondylitis_treatment_nice_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/tulagosikemewasesazame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9720/3894/files/zuwuvemizisepata.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/6496512198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2159/6334/files/epoccam_pro_apk_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4067/3444/files/difepizipunoxitumikeja.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 extracted file (font_00_sfnt_off00004a01.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A01 5332 bytes
SHA-256: 61767d70a78c16c501318cc62934cfc1335ed6a64342470b8e3724380fafa730
font_01_sfnt_off00005c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C26 10684 bytes
SHA-256: c4b1b8526e2751b165c02746bdda3668c4b6a9f2690b4baf779dbce25b44978e

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