Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2a9638edd0aa8f…

MALICIOUS

PDF

71.0 KB Created: 2021-02-02 00:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 2ba09e24f0861aa0b1754a061d12096d SHA-1: 61547cb227303d40df5b5bee2c0578d2d0dbb583 SHA-256: 0f2a9638edd0aa8f4f2b6903ec339ff7d9fd342db5a1cc8dd6e7afe85727d7f1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/shook?utm_term=parental+consent+letter+south+africa In PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fc6865b36410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476750/normal_5fe649f3c1cb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_600dfdf317fb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_600af8f063d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5fda78ae194a0.pdfIn PDF document text
    • http://zozuwax.66ghz.com/xuzotazuxajekulegoli.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/purixifusipelid/44262369201.pdfIn PDF document text
    • http://wekidezeze.epizy.com/nomegisizuputo.pdfIn PDF document text
    • http://wijogural.epizy.com/vobugidodutesumusu.pdfIn PDF document text
    • http://mekamaxabojumoz.epizy.com/brazilian_blowout_zero_formaldehyde-_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/68594967216.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/tuligexokakojula.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/hadoop_the_definitive_guide_4th.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/cragheart_guide_gripeaway.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/nogosasexonunu.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_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 4968 bytes
SHA-256: e0b84361af0ad430d8be3116dead99aa1165cdc5fe77e69fe8e76627c6d5c30b
font_01_sfnt_off0000e94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94F 11216 bytes
SHA-256: 50298483235bc133ea69d9ca07405ffe0c2808d1a1daded33399c3d15fd26533