Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f6aa7961a1e329…

MALICIOUS

PDF

41.6 KB Created: 2020-11-09 14:54:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47b4805bc3e07bd03cf2ba013e79d7da SHA-1: 148e8c98630251ae04153197e3735b7cbbeb1766 SHA-256: b9f6aa7961a1e329d1c35e6ba01c21190aaacb90d51962a10e7a12f4f75c4b18
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI and a high-severity heuristic firing for a redirector link, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains URLs that are likely part of the lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?keyword=shelley+lake+homeowners+association PDF link annotation
    • https://lonitavow.weebly.com/uploads/1/3/4/3/134355974/3282356.pdfIn PDF document text
    • https://wufujaxuwagax.weebly.com/uploads/1/3/4/4/134400484/7735966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f8b240fda229.pdfIn PDF document text
    • https://jivoxafur.weebly.com/uploads/1/3/4/3/134382284/6057258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f8b052c30ae5.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/lekizopiloref/krillin_dbz_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43365b5d-f5df-461b-9f9d-ca0172a6c3e3/cursive_writing_capital_and_small_le.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fafbf3-2240-4385-87f2-d631b2eed2e8/41585587124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d54dbdcd-d774-4cc2-adaf-b95fc92ec91d/36680638667.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_off00006223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6223 5400 bytes
SHA-256: 709665dd6b85a52865fe79866924e0c74cfb9ea88c300a04e071de509fa50e6d
font_01_sfnt_off0000746e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 11168 bytes
SHA-256: d269744ff2f0514fd9340b9f1afcde73c87315a376d14cb87a42a0465eab749b