Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceabbe5082b6c05d…

MALICIOUS

PDF

48.8 KB Created: 2020-10-24 08:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 847195c47fc3073abf04dd612e19023b SHA-1: d0cc71f0dde25a4b9e6f7fbfb6a5f8bed15a5bdb SHA-256: ceabbe5082b6c05d18b941b34fa607915538743f9bfbed40577c9aaae002a504
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://ttraff.link/123?keyword=sindrome+nefrotico+en+adultos+pdf+2020 In PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/1564899.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/8956929.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/xexudagozoje.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/7f92d.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/c4888d02c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/vovofofaverun_sawivurovoj_nifawubazox.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/kowijusanineburemumi.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/duzexobog.pdfIn PDF document text
    • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/7089992.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/bokaxafixizan-wakodoxabuwo-tebamimisak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f93755694a22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8a2bd887e06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f920a5bf0644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f894e816a07b.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007872.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007872.bin)
    • https://cdn.shopify.com/s/files/1/0437/3073/1173/files/definition_of_public_relations_by_scholars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/7218690420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/sadikexepifiveri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/98055666299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/58745929277.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_off00007872.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7872 5676 bytes
SHA-256: 5ae69b9a696d087bed50554a6705d2561a59ea8fe53573910b57d29019c4f1f6
font_01_sfnt_off00008bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAC 12524 bytes
SHA-256: b63159386521d48c29cb20a8d7dfc08dfb07e7cb6d2a842de987d38103ae5d20