Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eab3d33ba52d4f8…

MALICIOUS

PDF

65.2 KB Created: 2021-02-19 05:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 50acff5a61ff367ebf9920308f83a8f2 SHA-1: 5dc66d8e18554f39b8a933fc32d8415c3302979f SHA-256: 7eab3d33ba52d4f80f0355a05e8e899bf18488838f2ba50aa6dd59a2f34ee701
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://druttle.ru/wix?keyword=cadet+guide+afjrotc PDF link annotation
    • http://vewisezozebo.22web.org/75126487542.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427273/normal_5fca3fc10e32b.pdfIn PDF document text
    • http://nofunaxo.22web.org/pomigepibi.pdfIn PDF document text
    • https://fikenetefi.weebly.com/uploads/1/3/4/7/134771518/cd190e8a82e5ff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450898/normal_6011086a4e191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fcfa330eac38.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/gajakelegeza/7482459398.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/zubulorelofemoberunon.pdfIn PDF document text
    • http://pepajefosub.epizy.com/eridium_farming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/bernina_embroidery_software_8_user_manual.pdfIn PDF document text
    • http://lulojoduvos.epizy.com/83336878114.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/avast_virus_removal_tool_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/beps_action_2_final_report.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_off0000b709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB709 4960 bytes
SHA-256: e694d33e7626fc79daa1dac90ac50be19b3ae734a7b8caacd9f9fb02b1758899
font_01_sfnt_off0000c806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC806 15016 bytes
SHA-256: eba8c96f9304ebe40ec6de483f42838406c64af493a5d30fafcbe514329d6489