Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2616355d9dd663b…

MALICIOUS

PDF

74.0 KB Created: 2021-03-01 23:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ff9127dfb29ecd62b618df1318f4b569 SHA-1: c291819ea53509753a5059c94de64e1e29ddadfd SHA-256: f2616355d9dd663bb1b04380ada5a3f57490ca4e487682b9b04d1d2e787830f2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yafferge.ru/award?keyword=just+along+for+the+ride+definition In PDF document text
    • http://verifiedbadge-lnstagram.com/harry_styles_album_zipu65qn.pdfIn PDF document text
    • http://usmileofficial.site/chuang_tzu_watsonzdfgb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491969/normal_601db47790dda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466659/normal_602e4ed68b115.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/52440028379.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/oMz4Bih/glow_air_hockey_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/gh8gcgf/pijokinibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_5fe8363ad5580.pdfIn PDF document text
    • http://thrivewebs.com/14817272475qm2ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457332/normal_601f75b1ea3d6.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/pedekokitijuwugin.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/rikolesafuwofar/cerebral_malaria_pathophysiology.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/vamerenalobafo.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/276999554.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/dedivorofulivuvobuf.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_off0000e50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50F 5160 bytes
SHA-256: c8b40cbac89a5b7597533599cbb626778796453d6b1922fa30af64b769d2d41b
font_01_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 10720 bytes
SHA-256: 1928a31ad93739a241829da663810f44f8cf3ad1dc8c27844d8a105fea48f013