Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7e0ebfc56f6b7d…

MALICIOUS

PDF

111.6 KB Created: 2021-02-07 17:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66e113fb273cc8e7cfc04e23f8f60c30 SHA-1: 6a50b0a2057dd61932083e7a417bc2d9362a9bec SHA-256: 9d7e0ebfc56f6b7d3b0c8be512ed5dba8c490ea977e8fb912f32c289d1850435
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wb?keyword=informed%20consent%20therapy%20template PDF link annotation
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/1c7ea8c0e193f4.pdfIn PDF document text
    • http://temilops.xyz/file_input_accept_docfq3ur.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/nubifuduxi_vodamevirogufir_xojefolet.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/ket_speaking_activitiesllrd6.pdfIn PDF document text
    • http://hopecommunitynaz.com/54413315641mwa4y.pdfIn PDF document text
    • http://salestore.pro/7069458315rgy1a.pdfIn PDF document text
    • http://mrshadow.net/40209216391j217p.pdfIn PDF document text
    • http://detonicinitalia.website/dutugaxonab1ikob.pdfIn PDF document text
    • http://silkhfig.bid/roman_adventures_britons_season_2_walkthroughd7exb.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/tuxenipup/biniguf.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/watalatoxewukewisusabuba.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/medicare_levy_exemption_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/biography_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/mokajarelujux.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/apkpure_pc_game.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_off00017909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17909 5432 bytes
SHA-256: 0fd081a3ae4c5811566a74f04d434e022a1085ba48fb6c68c04b1377393f3e60
font_01_sfnt_off00018b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B66 11376 bytes
SHA-256: 0cc31a9c3effe830bb4f2c56655cff195162cddbb66949c152c16588fb2aadb6