Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f60679e75422dcf…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 14:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acb86cc611abdc3c85133220f259748e SHA-1: d5279d6329b9ee49ab0488a1569a4f85f3697898 SHA-256: 8f60679e75422dcfb69fab7e7609cc365f99c3736c007e4ef22affb6980f618a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a search result for 'pdf xchange editor free download chip'. This link redirects to malicious infrastructure, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily corrupted, but the presence of a malicious redirector and a link farm is sufficient evidence.

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://ttraff.ru/wb?keyword=pdf%20xchange%20editor%20free%20download%20chip In PDF document text
    • http://files.compellingministries.com/uploads/1/3/0/9/130970003/5f85f40e7e273c.pdfIn PDF document text
    • http://vajivi.willardenvironmental.com/uploads/1/3/0/8/130874457/duritumozapido-jekakefikos-xokigowosokut-redifel.pdfIn PDF document text
    • http://files.mgeducation.net/uploads/1/3/0/7/130775102/buditob-xanuf-zudofawedenaki.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/1/0435/2478/4283/files/tonomebukizuvut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/xoduwixexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/72278691347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/90255486247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/funukefediwavugelel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/supuralibela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/mimuvefenusafofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1688/7192/files/86375432287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/pavakagaterawepom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/11717518211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/keburuseluxofoxonito.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_off00006fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBD 5400 bytes
SHA-256: e79aacedb08492143dc94cc728c773a5f4f365b408161839c079cc8ed8ff1024
font_01_sfnt_off00008233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 11096 bytes
SHA-256: f95ff13309964c503d9c178d420991b77432200dc10d09428d6ebfc3c68d548c

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