Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd380bae06f99cd…

MALICIOUS

PDF

43.6 KB Created: 2020-10-17 02:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8861a009f9d28ffeb820dfdf678d14d3 SHA-1: e1f8a4131f90f43f8b72ea966ed33b48e43b41c4 SHA-256: 5bd380bae06f99cd50dcbf5d46041cb548923f53d0f026aa741d2430323b544a
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://gettraff.ru/123?keyword=download+game+scarlet+blade+for+android In PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/91e26.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/kebasubeb.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/pebigikosipale.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/0ee2a12c79f8dbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_5f8a1950af174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f896cb9d1259.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/d343548f-e7e9-478d-b5c8-a127d8c04ae0/luxafema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c118650e-3e56-4edb-8816-b293a7be6611/56179225675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/264cdfdf-223c-4cb3-bb80-87ef91a13c76/42871733110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a590d3-f19a-4902-b2b2-090fb111572e/46032084927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8510380d-8dd6-4aec-b8dc-b1b1ef22c41b/25306581402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9364/8294/files/gewebexogafaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7851/6376/files/51608963609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/27233359128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9895/5684/files/1_metro_70_cm_in_feet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8410/1804/files/the_investment_checklist_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6216/5141/files/tom_selleck_western_films.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6050/1921/files/phases_of_meiosis_worksheet_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/vaxijilovivibalomadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9441/2963/files/jonaranezewumovipivuk.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_off00006b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 5572 bytes
SHA-256: 904683f45d47bc424459b70da99a404050a0998299644c1192bf80fc7fca4026
font_01_sfnt_off00007e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4C 10060 bytes
SHA-256: 88cdddacb22193832944b22ffcdc1a7b3274fd0c6492229ad5dbd89761c81763

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