Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ea3a3a9e4fc4d0…

MALICIOUS

PDF

69.7 KB Created: 2021-02-19 20:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 96ec6b67c5856a390524d3fb4e4b4365 SHA-1: 0e748dd932b1d5c07d882dbe5f8aaecc35e66ca1 SHA-256: e7ea3a3a9e4fc4d06f9547e817efca921097497157946eec3ceb762103429efb
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/wix?keyword=n64+emulator+apk+android+4.0 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4453327/normal_5fdf2a0593ac8.pdfIn PDF document text
    • http://siwevizinoguji.22web.org/double_congruence_proofs_worksheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470960/normal_5fe82937c127f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472213/normal_602cde3d97af4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5ffbca035fc25.pdfIn PDF document text
    • http://dikiwezuvejeve.iblogger.org/mijebifi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494866/normal_5fc9aa4feb2dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390995/normal_601718dbbef76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505820/normal_602052f06236f.pdfIn PDF document text
    • http://rabisoluvilava.iblogger.org/pharmaceutical_analytical_techniques.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461516/normal_5fed32a31ce0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5ff1ed315b9fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5fd9657f4f7aa.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/pokorevalaxex/brackets_editor_free_for_windows_8._1.pdfIn PDF document text
    • http://kuxixatizoxop.epizy.com/20306706587.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/betternet_vpn_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/gevukupirepipimid.pdfIn PDF document text
    • http://dobifagamuwu.rf.gd/vixavifelinejer.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/77994636005.pdfIn PDF document text
    • http://wutewak.rf.gd/bharat_gas_form.pdfIn PDF document text
    • http://sidegiri.epizy.com/sogap.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_off0000d390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD390 5376 bytes
SHA-256: 57d3122450c6bdc1b7ddb32e1d4dd9ef73e41f4afeb1e6daf41b37012bfce9c7
font_01_sfnt_off0000e5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CD 10412 bytes
SHA-256: 292f521d6fb96a54933d307e3608730384abf6f54164ffe1f23a767997ad925a

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