Malicious PDF — malware analysis report

Static analysis result for SHA-256 99daa3675316ec5c…

MALICIOUS

PDF

67.6 KB Created: 2020-11-10 07:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: ee267eb218c02e2285fc4eb9452ac934 SHA-1: 4148e469c23348aeb9b720c0315c1abe84e2e96c SHA-256: 99daa3675316ec5c2f69ab11e6346f13bdf89a06a3f3a1ff05baf3f08947c5f4
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://traffking.ru/123?keyword=hopper+dish+manual In PDF document text
    • https://dafanifupo.weebly.com/uploads/1/3/4/6/134645493/tibufewubuwog_gegimegibaxuto.pdfIn PDF document text
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/pozel.pdfIn PDF document text
    • https://pukejuzim.weebly.com/uploads/1/3/4/4/134457080/beefd9.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/purawuma/toyota_alphard_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9d7f721-73bc-4217-8e70-8b69ad6ce2a9/ketilegivodola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a8d4e1-b571-4d70-b0ce-2394413b4486/height_and_weight_chart_women_over_60.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/kosikexesixumesivutasuji.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/fender_rolling_tool_harbor_freight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07aae6d6-dfb0-4366-8b54-b9ef56d5c3a3/sutugipekugex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42a115ae-f2dc-48ab-b688-5a40a34da1f6/zetasunivixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c4fd4a-d27c-4f0c-bb07-1c71c2af893a/pezevijofikonorewusij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03b629b5-59d9-40e5-bd75-21d32a21cf79/91161345968.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_off0000ccd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD9 5160 bytes
SHA-256: 8135c9080be7f5febef96b4dad561d9f1dd10491d26ec9e38e09bd3107ee40fd
font_01_sfnt_off0000de36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE36 10428 bytes
SHA-256: 3921ac82a00efd70976b3f961a851eb5e78cd2c68fbdfbbc591e7d2fefecb771