Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e6387978275c9b…

MALICIOUS

PDF

41.8 KB Created: 2020-11-03 12:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eefdb45851d169f412d67431e8efe8d8 SHA-1: 1546a4699def08a67a179062638034b01cbfa284 SHA-256: b7e6387978275c9b5756ec07a5a2b63990ee43d776af414cb0348f89fce809a2
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/aws?keyword=annapolis+book+of+seamanship+4th+edition+pdf In PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/jepagozusepidozofuki.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/xiririsuwemowalevif.pdfIn PDF document text
    • https://xasuvakem.weebly.com/uploads/1/3/4/4/134400919/mipupugo-kojevebe-renimiz-kugujodafa.pdfIn PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/xiwivebowupa.pdfIn PDF document text
    • https://sagupegijugix.weebly.com/uploads/1/3/4/4/134443219/xotiboko.pdfIn PDF document text
    • https://zazivepug.weebly.com/uploads/1/3/4/3/134359823/4233331.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/2cc726.pdfIn PDF document text
    • https://fulodovujigiw.weebly.com/uploads/1/3/4/0/134016909/d8b9826644b3.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/remufuzu/temepifuxasamimog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06323b56-17ea-4219-89fc-51f9f33da08e/6638780463.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/one_direction_just_dance_songs.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_off00006601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6601 5464 bytes
SHA-256: d42f2ab7c06dd8d32c92304289ab090db8d8099cf9014e27cd59ee69c00123c8
font_01_sfnt_off00007877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7877 10076 bytes
SHA-256: ab47289656fb1735b40d9fb891dc7caa65638926b4a5e270e61f00d9922bd535