Malicious PDF — malware analysis report

Static analysis result for SHA-256 243e9dcadfdcca7b…

MALICIOUS

PDF

60.8 KB Created: 2021-02-06 04:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4d6cce4748345dd32b62dafc2f87f878 SHA-1: cf841338a7b3125f5b34d9eac52172b6f3492e12 SHA-256: 243e9dcadfdcca7b333ca313411a1337c961a7d373749cb098708584046c0ed6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crophysi.ru/wb?keyword=beamsville%20weather%20report In PDF document text
    • https://static.s123-cdn-static.com/uploads/4449771/normal_5ff8ad423d92c.pdfIn PDF document text
    • https://cdn.sqhk.co/zixapegof/dZ0ibhb/penogepedagujo.pdfIn PDF document text
    • https://cdn.sqhk.co/lejesapazud/HiehizD/fox_sports_live_scores_cricket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_5fd1bdb12197a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419818/normal_5fc5a71ad5cf5.pdfIn PDF document text
    • https://cdn.sqhk.co/metevetufi/dijrNig/sonurezinakodumujipozufin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410201/normal_5ff3db0a83136.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375088/normal_5fc7b185f0eae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413117/normal_5fec1e5980ce2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448121/normal_60199e6e02e39.pdfIn PDF document text
    • https://cdn.sqhk.co/xunixenovapi/bPISfkf/puzugelafiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453118/normal_5fe8befea041c.pdfIn PDF document text
    • https://cdn.sqhk.co/fazejitev/cGFa9gj/neporavepakugezotigaxigew.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/hfDIohi/83074357106.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380691/normal_5ff1d83e5a04a.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_off0000b4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FF 5260 bytes
SHA-256: 67edc33b4d8bd6df44ed9977dfe94bd6974ddcaf2a8d9cddebc8c9938286f0ea
font_01_sfnt_off0000c6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6CB 9400 bytes
SHA-256: daa6be7adc43e624b9cf98c25fc80dc67ee896741c5e74a88dcb11fe8284cb98