Malicious PDF — malware analysis report

Static analysis result for SHA-256 4140dcbe04de583a…

MALICIOUS

PDF

48.8 KB Created: 2020-10-28 08:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f7a91fa478d3e4f7b10e8e333a322320 SHA-1: aa22f8397b6375509c25dcd74d81534b1e7d9204 SHA-256: 4140dcbe04de583ad1175ce9e4c5dad006909568bdb6384e0bebb21bf21c8b40
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://ttraff.me/123?keyword=feeding+bees+fondant+in+summer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f98fc57a5e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f895380909d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390684/normal_5f917e79c751e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_5f9013bb331cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387825/normal_5f976eee88f12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384152/normal_5f96359809064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f8e8e9a9b4da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f98e2a55376e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f8b9d65abaac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5f8faf7f7570d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393911/normal_5f963d18e76e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f8c53996fd3d.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/e626f752-e130-48cb-bea0-13cd5e8d9d75/86137935980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/488265ee-13c3-4856-9a8b-d913f25f465e/15649866953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffab8cd9-ae1f-4fea-a1b8-04079269e348/52964042313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d4d147-f574-4379-9b24-a3d8e748ef52/pomolaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3078/9794/files/69573249355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8758/5190/files/34884483913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2136/5148/files/60183671010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/lodobapesipesudedax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/wikabasokim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/mewodenifiguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/ledidetomawu.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_off00007d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D78 5292 bytes
SHA-256: 2e26ccb8d2039ae3210e2ec567da4d5fe764e2e5aa7e965c3aa10624c1b6ca77
font_01_sfnt_off00008f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5B 11724 bytes
SHA-256: 389e6878ceda1f98d41a6b7f56b0c938dd62106990c501b62dfd1f8c09e7f8d6

Open this report in the interactive analyzer, or submit your own file for analysis.