Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07138221671ddfd…

MALICIOUS

PDF

41.4 KB Created: 2020-10-25 14:16:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 7f084e67d9b848855c574530b1c83dcc SHA-1: e37e2ff8ff14d9d2f0e1cbe55e231031db71acfb SHA-256: d07138221671ddfd27ee5221701769fe2403867a154665bebbe6c771bba33f21
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/wb?keyword=epidemiology%20of%20ebola%20virus%20disease%20pdf In PDF document text
    • https://s3.amazonaws.com/leguvefu/blanca_nieves_y_compania_english.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/sebojowumizubilogudevixi.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/10688722806.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/60108814225.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/jizubaxesivozol.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/mezilem.pdfIn PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/6697967.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/19809051759.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/amantes_para_sempre.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/jazojivarubafat.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/e13387a.pdfIn PDF document text
    • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/gigaxebakoroj-devobefew.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/9ecc6771f91.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000061b5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000061b5.bin)
    • https://cdn.shopify.com/s/files/1/0487/0809/2054/files/79126561799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/4213573533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0799/0184/files/falubisutofigewaji.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 extracted file (font_00_sfnt_off000061b5.bin)

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_off000061b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 5620 bytes
SHA-256: 0eae85ef9727655f23e5859768475d971d71f93bbcd531dbaf28e4218ab369aa
font_01_sfnt_off000074ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CE 10560 bytes
SHA-256: f580cafd9013c5203c287ba033c14e723992374409f11a714e2da04a98b50b3c

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