Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a19b72dd7aff93…

MALICIOUS

PDF

62.5 KB Created: 2020-10-01 23:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 38ae4bfca10b660b5e9a6e9352d74a6d SHA-1: 78769cf798469d2a349b6909cf672c69d858369f SHA-256: 75a19b72dd7aff930bb8dd41fd6f1943519ff2c0b09236d046a8a443f52c803c
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=looksmenu+customization+compendium+n In PDF document text
    • http://gubez.abundantlifebaptistwashpa.org/uploads/1/3/0/7/130775085/4015225.pdfIn PDF document text
    • http://sotaju.siltsockinstall.net/uploads/1/3/1/6/131637395/mesiliga.pdfIn PDF document text
    • http://files.halifaxstreetangels.org/uploads/1/3/1/0/131070579/1662198.pdfIn PDF document text
    • http://files.egpscotland.org/uploads/1/3/0/8/130814345/2984936.pdfIn PDF document text
    • http://bunufere.clarabellum.com/uploads/1/3/1/3/131381021/5f2d243c97f0.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/45cd6369-1bd2-444e-9410-7658c22aedc7/jiluwunebagevatew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39dfca29-c144-4204-b769-02044eb31071/9971371169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04e84c4d-b800-43eb-86fb-d56e9414a489/ribofabatokokajefomisex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/661acf93-1b84-4fe1-b229-7f4093527e87/5528707323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57518e8-e2d2-4e20-b4cf-c7298d55e9ef/83259859305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94df8391-74a2-4409-acee-87da4d6618a5/fukesega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5192f44-3a99-439c-8e10-ddbccc60016d/fotimaraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5393/6540/files/ffxiv_sabotender_mount.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1832/4632/files/jones_barbecue_and_foot_massage_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0033/files/titans_training_camp_hat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3872/3226/files/lenox_federal_platinum_dinner_plate.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 6

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_off0000adf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADF8 5148 bytes
SHA-256: 7ad7ecba72b31e55ed5f2e4485623e250a8e5db764cbf3df626e01e61da63903
font_01_sfnt_off0000bf7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7B 14788 bytes
SHA-256: acf80032b78d5456c1dab615b134ceb5c79cffb48b1b21a1cc18acf8fab92251

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