Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2110c1dc376e14…

MALICIOUS

PDF

40.0 KB Created: 2020-10-30 04:25:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f72684e700b79624f44c4855ba74fa49 SHA-1: bdc93ed453f4af0a1ccfba11dc708128fd49f3a7 SHA-256: ac2110c1dc376e141b1051dd0b1db6b5574448ee6a52b5107a6c768e2c05c602
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/123?keyword=pot+belly+wood+stoves+craigslist In PDF document text
    • https://gonoloxezejuje.weebly.com/uploads/1/3/1/4/131410007/13258.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/5683838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5f9b43d344575.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/0e5aa94c67ff88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8eaae96d113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5f93a89b16f7e.pdfIn PDF document text
    • https://fefaxositepimu.weebly.com/uploads/1/3/3/9/133986539/8510350.pdfIn PDF document text
    • https://falogumirej.weebly.com/uploads/1/3/4/3/134368081/177911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f94520e576f8.pdfIn PDF document text
    • https://xemivigezeb.weebly.com/uploads/1/3/4/4/134481563/a884e1d51ba1.pdfIn PDF document text
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/47191.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e53.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e53.bin)
    • https://cdn.shopify.com/s/files/1/0477/2813/2252/files/88419245544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9080/2336/files/personal_finance_turning_money_into_wealth_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/gapadivap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9924/0621/files/metals_handbook_ninth_edition_volume_13.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/46116128935.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 extracted file (font_00_sfnt_off00005e53.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E53 5500 bytes
SHA-256: 8b05d918fb2e643c91dc17f9d2e67831d2205b5d46dda4d51037d2dd20045f04
font_01_sfnt_off00007130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7130 9956 bytes
SHA-256: 9650c4c00fa6c52e6b2e27318cd1267c7d299fb91531d749f3e2e5689a7637ab

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