Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d0e227ee007232…

MALICIOUS

PDF

69.6 KB Created: 2020-10-06 23:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 9c51ccd8a26843dc679c4f926a38b1c3 SHA-1: 76ce4c0283d8ec3ee50b77940be7236adf4e289b SHA-256: c5d0e227ee00723207f877105bd2943bf25d7c4dcd25cb544804ab34e0d498b7
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/strik?keyword=linksys+wireless+g+pci+adapter+wmp54g+driver In PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/botimalilikonif.pdfIn PDF document text
    • https://site-1038867.mozfiles.com/files/1038867/13932928996.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/1/0428/1437/4054/files/anytime_fitness_madison_wi_atwood.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2641/6551/files/dj_khaled_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1686/5952/files/the_crowning_of_arthur_sparknotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7374/4295/files/yooforic_hemp_oil_gum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/wwe_computer_games_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ba7cc7-76a7-4b06-a2c8-cee66f8710f0/pawotola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b296b662-2845-43d5-b5d2-144b75999aa4/57686982912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ad11d81-899c-4dda-9c64-957210835f13/kilibimaliwujowuludufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7887/2988/files/willy_wonka_and_the_chocolate_factory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8124/4577/files/58932496100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0375/0811/files/lab_equipment_word_search_answers.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_off0000cfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFF 5864 bytes
SHA-256: 9e20026bcae0b38744f8d29e5db6c7b632290e73b2a6117a40df1cf2004e42ba
font_01_sfnt_off0000e40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40E 10956 bytes
SHA-256: f1e7e3b1e6424cf9c85c6a1d882964e829470e262a208da58f6f24ee0f198f40

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