Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d87b68e2f39eff7…

MALICIOUS

PDF

44.7 KB Created: 2020-10-10 09:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 55e06c4ae2f7e4c828631c9d82a27aaf SHA-1: b6cbac18a823a14f501e9aa83a8827f87cc8d2d1 SHA-256: 5d87b68e2f39eff7dc55a69920c65367f89c78e97c058f24d9e86c608ae6c47f
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://ggtraff.ru/strik?keyword=the+tree+of+knowledge+of+good+and+evil+scripture In PDF document text
    • http://mepeme.magicmikeskicks.com/uploads/1/3/1/4/131453027/9926084.pdfIn PDF document text
    • http://pepaser.qigongnyc.com/uploads/1/3/0/7/130776508/doninumuj.pdfIn PDF document text
    • http://silakej.robertjrevell.com/uploads/1/3/0/8/130874493/nuderojugaxa_kuwanakatujam_vamikuleriribed_nubatelewapexo.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/7094110179.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/1/0431/8222/7617/files/vasafubosamasovorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0789/7510/files/pitevomulalovav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3650/6272/files/38868263087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9120/0674/files/nukibinerazarog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0268/6372/files/49401284840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/96612746636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0243/0116/files/85947891976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6313/9733/files/hamilton_beach_iron_14977z_manual.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_off00007071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7071 5580 bytes
SHA-256: 5a6ef5d3f997049ecdd6e41627a56d8878fda5e8cf2134d7083f008b940e131b
font_01_sfnt_off00008383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8383 10088 bytes
SHA-256: 15510da7fe38719cc0eb29921e6015daa7a57deab476587a9e6a937dafa3ab33

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