Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c10265936b5781…

MALICIOUS

PDF

41.5 KB Created: 2020-10-05 22:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ac5a147909d15cd693047792c1823f58 SHA-1: dbd7cfe6e3acff2b46f2faa1b762c9204080448b SHA-256: 65c10265936b5781d59fd3bf2a1bf7748f51ee232a09f7161387380202f81e16
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=dragon+city+rare+breeding+guide In PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/virud.pdfIn PDF document text
    • https://site-1036775.mozfiles.com/files/1036775/fekejobek.pdfIn PDF document text
    • https://site-1037842.mozfiles.com/files/1037842/rivimata.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/kuwefaputudaritogo.pdfIn PDF document text
    • https://site-1036799.mozfiles.com/files/1036799/konawunefigi.pdfIn PDF document text
    • http://jesasin.lisadowning.com/uploads/1/3/1/6/131606126/pitineligememi-fufanoda-menapabawizideb-suwetifi.pdfIn PDF document text
    • http://rozar.giftedwishes.org/uploads/1/3/0/7/130739873/jaraligizinagedeza.pdfIn PDF document text
    • http://files.superiorlogworks.net/uploads/1/3/1/4/131453784/a5128fdd4cb.pdfIn PDF document text
    • http://files.thepatriotoutpost.net/uploads/1/3/1/3/131383771/degop.pdfIn PDF document text
    • http://files.ssyyogalife.org/uploads/1/3/0/7/130775429/mekoguremozudefat.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/77882234515.pdfIn PDF document text
    • https://site-1040432.mozfiles.com/files/1040432/mitas.pdfIn PDF document text
    • https://site-1044104.mozfiles.com/files/1044104/xoxijupiwor.pdfIn PDF document text
    • https://site-1037204.mozfiles.com/files/1037204/6702615622.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/1/0438/7376/3496/files/90088835791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0309/5457/files/foods_that_start_with_the_letter_n.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2479/7855/files/xbox_360_red_light_on_power_supply.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/kilulosiriduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8846/5051/files/vopenulinikexifewujuxikud.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_off0000653c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 5136 bytes
SHA-256: 76824354d262ecad6cb3c60b194b3bb09340bab2291007702dafe5d0d5571326
font_01_sfnt_off000076ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CE 10096 bytes
SHA-256: ac9d5c2dd8feacedb1de194b0aabb5a05d6b641919f37aceb4fa5a78ec4063ce

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