Malicious PDF — malware analysis report

Static analysis result for SHA-256 441c4f7d579a04c7…

MALICIOUS

PDF

42.0 KB Created: 2020-10-03 05:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-05
MD5: fffc16634b8169b89847d7cfa7519c00 SHA-1: 56dba557bd46ab8e1c527a2f642424ab381755e7 SHA-256: 441c4f7d579a04c79c4d6644f53e70b8e41a74b7903cd04142e0614cca5e8926
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=job+offer+letter+template+south+africa In PDF document text
    • https://site-1036621.mozfiles.com/files/1036621/jibufakufelatok.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/vibexelufo.pdfIn PDF document text
    • https://site-1039478.mozfiles.com/files/1039478/sidef.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/77292764708.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006560.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006560.bin)
    • https://cdn.shopify.com/s/files/1/0479/5678/7367/files/limekiln_state_park_campground_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1552/4511/files/lubexerivevixanezup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7956/4448/files/pivak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95777f34-c294-438e-b773-bd12f1ffc021/lupovumabusawajizis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/474dd8b1-c129-4654-8e87-1beedb8f0eaa/fujitonuropefiseku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e23937-a5da-4558-9889-259e336ceb4f/32473050142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ba5e0ed-282d-4d89-82ab-8dbb36c84049/56222742777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1463/8744/files/70558625182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2286/6842/files/ledofejilebekaxedubumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5127/8755/files/funny_comedy_quotes_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9903/2219/files/60256913147.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_off00006560.bin)

Related samples 3

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_off00006560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6560 5384 bytes
SHA-256: 3c58e2e2aca270e338dff3917e212840dae54f7116847bbb1b222327216c1578
font_01_sfnt_off00007783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7783 10420 bytes
SHA-256: fcb1b77d353c204c9511391dbf4d4f64dc8373b6a73e4184305a933ae82068d7

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