Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3563f66d463e93…

MALICIOUS

PDF

73.5 KB Created: 2021-03-03 06:27:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bec702f4749f6a1296e037d60dff85e3 SHA-1: 7206b3b07f99a047c7baa0099db292b7c4b65657 SHA-256: ed3563f66d463e93a029b63482841a333484edfe8cd8cebc9a62d4a76020e7c0
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://gimoguvi.ru/wb?keyword=alkaline%20herbal%20medicine%20book PDF link annotation
    • https://nopetozu.weebly.com/uploads/1/3/4/5/134507327/2698488.pdfIn PDF document text
    • http://jodujimapiwox.22web.org/40676953456.pdfIn PDF document text
    • https://zobujopexa.weebly.com/uploads/1/3/0/9/130969678/pabaxelatij.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/zuwaj.pdfIn PDF document text
    • https://wopokajam.weebly.com/uploads/1/3/0/8/130874492/3055288.pdfIn PDF document text
    • https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/5324dfbee10.pdfIn PDF document text
    • https://cdn.sqhk.co/judawube/jihkkgf/27769697283.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kefabebabefi.rf.gd/catalog_mockup_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/79377266380.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/anemia_falciforme_cure_naturali.pdfIn PDF document text
    • http://kurejewupom.rf.gd/what_are_some_examples_of_criminal_law.pdfIn PDF document text
    • http://faxipobusevive.rf.gd/britney_spears_everytime_mp4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/leeland_way_maker_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/business_analytics_masters_online_no_gre.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/xujuvo.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_off0000e3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CC 5192 bytes
SHA-256: a52ce1a811e26dfdf45a9eb5cc836bcaf05e0c9d614a534894a83d2447e9c85a
font_01_sfnt_off0000f545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF545 10588 bytes
SHA-256: 1d6454198d1509fcb8c8a231c828afaf2fe4d03c12b6ede7b6af1fe9df48e224