Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ad66c574417a18…

MALICIOUS

PDF

34.7 KB Created: 2020-10-31 00:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8c5a0602615105aee814e81bb5b54693 SHA-1: f485a20fd25fa86a33c958c1e360d52fac78c8b4 SHA-256: f6ad66c574417a18a660bf291febd48ffb423c375b968ff27c6947c63872ecba
134 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.
  • 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://gettraff.ru/strik?keyword=jack+welch+book+straight+from+the+gut+pdf In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/wepokivaw_wokeve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378623/normal_5f8a05196301d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_5f94336acf870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1546/5883/files/78990013397.pdfIn PDF document text
    • https://s3.amazonaws.com/timafatafej/characters_in_1984_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61435a67-6d70-46ba-b674-27fe4a4b0515/62594662696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8676/9053/files/39703219250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc9e595-a849-4ae3-bc51-cd0bb5ae4d4c/2250523242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1586f3f5-b189-4d79-a965-9a98325348f9/lipek.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/bedford_introduction_to_literature_10th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f840fa3a-983c-4c77-82ba-bb47865ab18c/zujefas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be925783-e8cf-4ebe-9acc-9551ee85a35c/tuxawopet.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_off00004830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4830 5856 bytes
SHA-256: 186e1afa1cd198f6ca0d063c50a272b030821a9c29dafba0363e5294886293d3
font_01_sfnt_off00005bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFF 9944 bytes
SHA-256: d3d354d6f3cdc2362b610c710bd4ec12f33e44c2cc489a3950eea3b21904f850