Malicious PDF — malware analysis report

Static analysis result for SHA-256 92405687e2e65de9…

MALICIOUS

PDF

45.3 KB Created: 2020-10-14 03:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c2417adf08417a37745d5ad66b044274 SHA-1: 0a34ef16cae45f54964d99740ed494c7024d436e SHA-256: 92405687e2e65de9e7be9c662a7445f9e4c91d7decac74a434dff011a9840766
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=joie+car+seat+isofix+guides In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/8536469.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/45967580040.pdfIn PDF document text
    • https://site-1042777.mozfiles.com/files/1042777/6466949821.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/19316718273.pdfIn PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/birekuxekijizofapusofag.pdfIn PDF document text
    • https://site-1044164.mozfiles.com/files/1044164/57795064203.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/1/0497/2412/9437/files/rugone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/tetugatonojipefesib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1256/7452/files/i_wanna_grow_old_with_you_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0576/7590/files/moneyball_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7608/4646/files/88863508359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7557/2390/files/nijowitaxonega.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_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 5216 bytes
SHA-256: 777b86b48c4176ba5aac4f8831ff33063c80d13701b6ce9ecd41cc22bbe16fc9
font_01_sfnt_off000084ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BA 10440 bytes
SHA-256: 3ea4031d08f8f434a56a707bf83d5498706d886f5615897a34a80fcb5bd841ad