Malicious PDF — malware analysis report

Static analysis result for SHA-256 0170dec65e5e3624…

MALICIOUS

PDF

72.8 KB Created: 2021-02-12 17:37:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1e2bcd5fecdfaa5ec337c33132fbb569 SHA-1: a90e62de2baa7e38bfe87c1ba0c880215d518a64 SHA-256: 0170dec65e5e36240b547ed1fe97ad863021012f60da67372a16629876cdb0a6
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=arkansas+fatal+crashes+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496584/normal_5fc5e53070b14.pdfIn PDF document text
    • https://fapuwokezisojo.weebly.com/uploads/1/3/1/4/131453853/193a9caf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fc5c1176fd44.pdfIn PDF document text
    • https://xexiwimelogodit.weebly.com/uploads/1/3/4/5/134593193/187170.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483623/normal_60057f1d3bd2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_5feaf0bfa38c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500679/normal_601e4394d57e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5ffb31a92ed09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497697/normal_5fcc049c99d02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366010/normal_5fcb30616dc02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417408/normal_5ff67a6470945.pdfIn PDF document text
    • https://luvegiramoki.weebly.com/uploads/1/3/3/9/133986347/vidaledoraluxezedela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448357/normal_601c870fee4da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490519/normal_5ffc9ffe8d85a.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/jazamerijekufol/kindle_ebook_format_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/mineral_hemoglobin_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/android_root_folder_data.pdfIn PDF document text
    • https://t.co/5HiiHwxL1LIn 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_off0000e0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D4 5296 bytes
SHA-256: 8212b3692f2b77ee3a3a330ff5bd13bd23771e62a2e9dde8628e947c7bc7033f
font_01_sfnt_off0000f2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D4 10388 bytes
SHA-256: a3c08610046000fa1e9ae67c253be2983701d4cf6254fcd56f64c726834be47c