Malicious PDF — malware analysis report

Static analysis result for SHA-256 3917bcc2087d7c8c…

MALICIOUS

PDF

879.4 KB Created: 2021-03-20 00:08:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7c7097417dca1acee33b5130a94c4f47 SHA-1: d5941e58d962427eb70d6c53dd5537c0b06dccc8 SHA-256: 3917bcc2087d7c8ca6ad4f516a1b3d3a3756427455f87f8cc50243ab9aa202fa
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5490

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
  • 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://soxebez.ru/wix?keyword=sybil+flora+rheta+schreiber+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464070/normal_6016c5212ddc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495696/normal_60200286e283a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458618/normal_601801e33c339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_60316996ccf34.pdfIn PDF document text
    • https://cdn.sqhk.co/rarukaboz/iAgfjaf/61777340431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474450/normal_603cee8a9ca78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480598/normal_5fe1f87727859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_601fd4a344155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_60246f55e5477.pdfIn PDF document text
    • https://tunorikiwevog.weebly.com/uploads/1/3/4/0/134097136/kosuxedo-tagiju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464702/normal_5fe356efc2745.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/igjogi7/nixotaxap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481847/normal_60470b33327b8.pdfIn PDF document text
    • https://wutomafokusax.weebly.com/uploads/1/3/5/3/135314756/2ea03494098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_60533d99936ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7721f57-431c-4011-a066-122dbc4e5d64/19091604918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315ba7d6-ad79-4eeb-ae36-031a0dbdccec/xewikodiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44d33e67-9b71-4ba2-82fe-c38e5ffbdbae/kadifide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ddd9151-3e2a-43f4-a222-aecaf9670dc7/where_is_the_ntuser.dat_file_in_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d53d550-a7c7-498d-84e4-61a15217ca1d/wugavejofanibugof.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_off000d6f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F26 5680 bytes
SHA-256: 189f234523468abb386c69cbab2607c6589263cfe13f46733fab450664859d56
font_01_sfnt_off000d8293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8293 11672 bytes
SHA-256: c930f93994db5f227cb9e8d2d84f369a2828df696b56f6519ce105fadb7a7288