Malicious PDF — malware analysis report

Static analysis result for SHA-256 47815ef6bc6aebc3…

MALICIOUS

PDF

38.9 KB Created: 2020-10-07 03:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: f4ab98f23244a858986d49463a67d812 SHA-1: e9bc71331b881145dbc412ae9abdb977634f1149 SHA-256: 47815ef6bc6aebc3048330372c666a1ed60d26725e454f7be02200e839edfbde
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=introduce+yourself+ppt+templates+free In PDF document text
    • https://site-1038790.mozfiles.com/files/1038790/lelekajenez.pdfIn PDF document text
    • https://site-1042824.mozfiles.com/files/1042824/11089759123.pdfIn PDF document text
    • https://site-1042624.mozfiles.com/files/1042624/63650672733.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/5f45ba4c-fc29-47d1-8902-005fc5db277f/naxagekego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deec9bb3-c395-4166-82a3-d19378fe1b98/vapubosizupoxupopopojoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36f0cd6c-800e-40dd-9d1f-5df04e672bd1/6235277283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4702ee1b-2286-4556-abfb-b513f4940ad6/mimiware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ff73b1-0323-42a2-9b5d-c410f868f459/98662175156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8757/0105/files/dbt_skills_manual_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6726/files/multiplying_matrices_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/mutovixalaxixukakodavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2953/1293/files/50769686868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72c2e04-070b-43a2-956c-0b10ee0e19e3/gukizagelugesorevafikij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1ed957-647f-4cf9-9375-cac6eaf10206/921782124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84346783-b43b-4e63-8943-c411c9a2c72a/visizowofobipixirugotixig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40129ccb-1fb0-4367-9250-a699eebbcec1/192867320.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_off000057d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D4 5340 bytes
SHA-256: a865f9e33622ad8094314a38f6431dcac943c74b34fa934610a6b7827b72ddf4
font_01_sfnt_off000069f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 10764 bytes
SHA-256: a296a028dd0ce3b838a91367e8790e31c22396fb0f309588563795706601fe74

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