Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5d2bbc853b827f…

MALICIOUS

PDF

69.0 KB Created: 2021-02-12 23:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 04ecfcd195954acf6b2c71736b563660 SHA-1: 03960243356d8b1aaab1fc28838fd2dae6b06610 SHA-256: fd5d2bbc853b827f1336940e8d2e8333039563fc3caa4cc6f1523ecd138e09b7
204 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://baarspo.ru/wb?keyword=blank%20yearly%20calendar%20template%20word PDF link annotation
    • https://cdn.sqhk.co/pugirunosamo/jek9GcG/pinball_flipper_protectors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500450/normal_60091dd4dbdc3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_5ffca7ad40c99.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/rge8jfH/38021749457.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463279/normal_5fc8dbce82f50.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuwomu/7dNA2gc/85108966630.pdfIn PDF document text
    • https://cdn.sqhk.co/filumabit/dijhhjg/sagiwaxasotudijizigapusis.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/85939994.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367296/normal_6003a5ca5e7e9.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/bOpggje/fokola.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/hgjcgga/jikogubovokebusafegonozaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424683/normal_5ffddb475bc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_600eafbbceeb1.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/prgfpgB/customizable_stickers_in_bulk.pdfIn PDF document text
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/zojow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD047 5348 bytes
SHA-256: c0253002edc6637d7b727dd3956b6efe6cdf137cabfc81d89c30a59830ec7aa6
font_01_sfnt_off0000e27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27E 10716 bytes
SHA-256: 8d525e4abe80a520be9d856dc9f706bd45f210e1d51ed525ea545bf9bfc9ca91

Open this report in the interactive analyzer, or submit your own file for analysis.