Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6b147f4b1b5625…

MALICIOUS

PDF

34.9 KB Created: 2020-10-31 09:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 43c92c05e210fe6ba15819637aa3a78a SHA-1: 2d5c90eefbca0d85f30adb41ba1269b158590eeb SHA-256: 7f6b147f4b1b5625b9ff6a49ee71a48437a4576aba86d0bb8cc893afc0ba7e98
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain URLs that are part of a link farm designed to attract traffic. The primary goal seems to be directing users to malicious infrastructure, likely for further exploitation or phishing.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/strik?keyword=light+science+and+magic+pdf In PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/latew.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9031774.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/poluw-suxunawaki-vixatijebope-selukanis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7dfae0-cbaf-467b-b020-1cccd5e8eb57/vedelugokavitasamopogom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf3da44-4f15-4223-b995-7725dc979c0f/woxodevimikev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e17587e-fe2b-4d52-a32c-e51bdf49cfde/loxifizesuwipofaziputazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c72be8-8877-487d-936c-3e34a2b8abaa/garisopuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7835d48b-bb98-4845-9118-c2216af49e1f/mobabowesog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01db5247-174b-43ad-93a2-e9e03eaef24c/plugins_for_davinci_resolve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14930a35-72a0-459a-927c-81734c12d61d/77743028667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa202e2-cc5b-4f23-ac98-b0d5a0e26bda/the_yellow_wallpaper_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c763180-2d42-45e4-83a3-de804673d82c/85988934822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8350561-54ba-4686-9d22-fe760f8e95d3/new_free_trial_chat.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_off00004909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4909 5380 bytes
SHA-256: 85a5ad73a7e6e1678974b162543165f57c6798658a3e84c35c0738966c427373
font_01_sfnt_off00005b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B43 10972 bytes
SHA-256: a49b5ee0f8200ac6177bafe7e77b8066e740cd9c482e47ef08561b181a61f015

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