Malicious PDF — malware analysis report

Static analysis result for SHA-256 de49438cffcc5331…

MALICIOUS

PDF

43.0 KB Created: 2020-10-30 08:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-03
MD5: 11ec6df44e1e5c00ef0931ee31b20871 SHA-1: 52723b959c6a42b94eac1e90d87a2f2816aa2ede SHA-256: de49438cffcc53319509bf765befb22f0166ff0e92eb78c0fac4993f255e373b
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=patriotic+order+sons+of+america+washington+camp+422 In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/nasm_personal_training_book_2020.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/jaxisi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_5f923bde5ef5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5f933bf16df6f.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/malepatidob-zixuxuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/88114486517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f8e4040b16ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5f8c278b2695d.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000066f8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000066f8.bin)
    • https://uploads.strikinglycdn.com/files/4ae21e30-6fda-425f-84fb-287d0c531bcd/lsac_services_coupon_code_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6631ab9f-3d30-4eb5-a286-b15f46724919/vomubomijajokidenujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903956a7-0449-4b0d-a61c-01c81e466dfa/93215174563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a2349d-a7d5-4fc4-93a0-2545ee35cb4a/kubegexeninadun.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_off000066f8.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F8 5848 bytes
SHA-256: 46cc303aed9b2206ec320afb4146f5bf4aa0ada1c7cfd11a67d89f6e162c9356
font_01_sfnt_off00007ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD8 10616 bytes
SHA-256: 3070e4e72b9ff3cb437f5b931ba859d877ded897388cc1dbc1ab6c6e9224be87