Malicious PDF — malware analysis report

Static analysis result for SHA-256 796ea7eca21397af…

MALICIOUS

PDF

74.4 KB Created: 2021-01-20 23:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 25bb90f10e057dfec412d629a2f1d49b SHA-1: 90c98b6f2707191b3e0893d9e44aa95ee404ca9c SHA-256: 796ea7eca21397af6790da9cf7d792f478d39c7f61acb3f2c15e86dc9e650b4b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffmen.ru/wb?keyword=gnomes%20garden%20decor In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_5f8e4030535da.pdfIn PDF document text
    • https://cdn.sqhk.co/losiluja/jdiishj/23844015648.pdfIn PDF document text
    • https://site-1177174.mozfiles.com/files/1177174/76120650588.pdfIn PDF document text
    • https://cdn.sqhk.co/sejaganetaxa/NhjBghF/boomerang_bangladeshi_web_series_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5fd6cc173e85e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385635/normal_5ff76d39b955d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489850/normal_60076b6e4a13e.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/jiicgfs/11412094082.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/tumenodutetonolivodazojop.pdfIn PDF document text
    • https://site-1201176.mozfiles.com/files/1201176/sulixafakiriwebax.pdfIn PDF document text
    • https://site-1221142.mozfiles.com/files/1221142/fatid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408190/normal_5fe804b09be3d.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/vatosolikijike/reciprocal_pronouns_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/formation_auriculothrapie_glem.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/6301895652.pdfIn PDF document text
    • http://didewuwu.epizy.com/formule_chimique_en_anglais.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/7151818576.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/58533703826.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_off0000e4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F9 5256 bytes
SHA-256: 63ff9d2263202f7b8fc389379d201fce80651408ae8c1aa88f3effafb0d3c7ac
font_01_sfnt_off0000f6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C2 11480 bytes
SHA-256: d14c7a7b41ce3813c6c4e930ef080ec73e991571847de842932045252003f12f

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