Malicious PDF — malware analysis report

Static analysis result for SHA-256 35846229d60e84fe…

MALICIOUS

PDF

44.5 KB Created: 2020-11-04 17:35:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5e2802bb74962f061a7a6d694d3c8681 SHA-1: c08c2fd027dc2c50acc3b341f5f36814607a31e5 SHA-256: 35846229d60e84fe0ee9e9e1ab365fbe079b2bacd1dcc1427fc4f70c1587df64
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.link/123?keyword=us+bank+home+run+porch+view+target+field In PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/lixudefanup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f9bdf88b69d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418362/normal_5f9bfc0597cc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_5fa11fb4f3df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_5f9932b047660.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/45373250458.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/john_mackey_composer_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/cerfa_14880_ref_01.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/90732453332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8965/7533/files/78445934777.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/1957_a_silver_certificate_dollar_bill_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/87407645764.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/fate_watch_order_reddit_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/antigone_paul_roche.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_off00006d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 5916 bytes
SHA-256: e287b9f9442aedacf55115a0df10c9dc4654421012ab958c7a72a6bc44febbaa
font_01_sfnt_off00008193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8193 10640 bytes
SHA-256: 138cde57e3b23af8fc7ecf25c59a9200b2aa90eca649857373f1238cfe3a9163