Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9e398fc92d6067…

MALICIOUS

PDF

51.5 KB Created: 2020-10-05 15:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89b84b7d4a2bc5c8d808828be5e936a6 SHA-1: efdcf9bd1b22620904d388e65ae7ace3b21d4733 SHA-256: dd9e398fc92d60676afccd530bf32ede16fd15456bfa24e70c3022ef2b7f3d0f
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=the+devoted+friend+oscar+wilde+review In PDF document text
    • https://site-1036850.mozfiles.com/files/1036850/72774321098.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/pobejaserufuf.pdfIn PDF document text
    • https://site-1041768.mozfiles.com/files/1041768/fekagi.pdfIn PDF document text
    • http://files.adarecamping.com/uploads/1/3/0/8/130813461/98fe8a85c95f.pdfIn PDF document text
    • http://files.matterbotattica.com/uploads/1/3/2/6/132681901/c586d0a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e1bdfbf4-3667-44b5-8653-1cf43ec73f19/40270413093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a8a596-79b0-4ee8-b723-1407cd725fea/resakadarixajajigade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fec8863-2d4f-45c8-ab0a-6a0c3236ec7d/8768563713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/548b4269-934d-46e1-8fbc-92c5ddf23545/72638387469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7882/3317/files/craigslist_in_hawaii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/damuxaragetodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7396/6758/files/gun_mayhem_1_unblocked_6969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6884/0353/files/23070545307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9891/3435/files/maybelle_in_the_soup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 5000 bytes
SHA-256: 96c5a1b7b558c89ff01c576ee902f6bad35c721ab6bbf2972e5ebcffdf795de5
font_01_sfnt_off00008f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F69 10456 bytes
SHA-256: 8695b6add31f6a09a4048bf2188977db7d0ac3c62ed88f989b9a974bcc6239b5
font_02_sfnt_off0000b311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB311 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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