Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9be0777251ebe2…

MALICIOUS

PDF

46.0 KB Created: 2020-10-09 21:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7e2a287f53a03f3ad2af6b39b41168e8 SHA-1: f0ec3e945166a1d5f3b11be081aa109c8d6078cd SHA-256: eb9be0777251ebe2024c5e20f5257503e10439547ad4fd78bcf9d80211794a36
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://cctraff.ru/strik?keyword=rowlatt+act+in+hindi In PDF document text
    • http://files.bendavidsonministries.com/uploads/1/3/2/6/132681504/kekeza-degejanow.pdfIn PDF document text
    • http://zasijovux.englishvintagenotions.com/uploads/1/3/0/7/130776433/sosonumunapuzere.pdfIn PDF document text
    • http://nebuzo.theothershoe.net/uploads/1/3/1/6/131637814/221a4c7c4c4c.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/1/0440/8151/2613/files/hunting_the_elements_worksheet_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2941/4055/files/zogewitezulusamakuwefumif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7676/6881/files/bilubetewerapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0768/8086/files/12605120080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3923fdab-4fc6-4dc5-ac7e-c93123cb54a3/vogigofikokebuzotirilek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19dfc269-6286-4894-850d-1a88f4258f69/38095853296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c53aad4-a693-4d9d-b686-70d3209b0c51/zobisopudugavuziduxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53a382f-e484-4158-80ac-725c2cafef9f/22547825151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1894b65a-2843-4ff2-a2a9-750421e96e6e/zagafipogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9393/7316/files/sozumatogugorizumofopape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/the_8_parts_of_speech_diagnostic_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4649/2565/files/vebore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0416/6050/files/tuzijopad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2078/2238/files/phantom_of_the_opera_costume_ideas.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000572c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x572C 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000616a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616A 4852 bytes
SHA-256: f7f5fff66da3203afdb3fddd3b7c679ba648ef5d6a745e79946d8d5c4f0da2ad
font_02_sfnt_off000071fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 10460 bytes
SHA-256: ba8278900b1a76b9347a1e8663415a534d5b91cf770ae65ada9634809da0de37
font_03_sfnt_off0000952a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952A 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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