Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa8b829e72ec682…

MALICIOUS

PDF

35.1 KB Created: 2020-10-18 23:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1ad15fadec9662d6d4276af69a19cebf SHA-1: 54fb63a4ccf56daf25941bc21097bf0d3856078c SHA-256: 1aa8b829e72ec68257d1e00394d1750d8ddfab97ec31317621aa24198faf4e92
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/pify?keyword=describing+people%2527s+appearance+and+personality+exercises+pdf In PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/29d85d1df8fbc.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/nitaba.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/badeniwetu.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/1/0429/3702/4679/files/42364518778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4600/2584/files/26825238231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/81825166559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9631/3508/files/kansas_state_fair_2019_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/bujuvilifagajezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/68321470517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4756/2645/files/zewasokizepozoxeduta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/boxidofovolatuwenevijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4246/2618/files/91986319572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9462/0333/files/81775836848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7236/3432/files/titivokobobexinanad.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

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_off00004971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4971 5664 bytes
SHA-256: 858f510b1b630bee78ef549fd949d6ad4204278138bba00cd65685b527441d7d
font_01_sfnt_off00005cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD0 9556 bytes
SHA-256: bd471259b72b5213cc9dad974085fd6657a4b6d7ec745be48aff991c2a8eb9da

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