Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d8950875c0051c…

MALICIOUS

PDF

36.2 KB Created: 2020-08-11 15:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dea7c145fbf3c9e9295c37bb126ab051 SHA-1: 1d63abaa9f3bd23658d0b0d71fa214fe55bb09e2 SHA-256: 83d8950875c0051c61a6695d61f304c6fc98b58f10512c48e252bb73cd36dd7f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which point to a redirector service. The document body, though obfuscated, contains a URL that matches the identified malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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.com/pify?keyword=nutrilite+bio+c+plus+pdf In PDF document text
    • http://wimiju.mainhomeconstruction.com/uploads/1/3/1/3/131383544/dodudijupokabot-dofezalaxokiki-latuloxakaw-wigipivoda.pdfIn PDF document text
    • http://files.marina-lutz.ch/uploads/1/3/0/7/130739678/fitebozupanodar.pdfIn PDF document text
    • http://files.shakespeareonclark.com/uploads/1/3/1/3/131379650/tonetagididizi.pdfIn PDF document text
    • http://fejowo.thailandtravelexplorer.com/uploads/1/3/1/3/131398091/wudira.pdfIn PDF document text
    • http://files.championshipvinylstl.com/uploads/1/3/0/7/130775196/0fe06417.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/1/0434/5656/1318/files/list_of_modal_auxiliary_verbs_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2634/files/50405223418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/crazzy_frog_ring_tone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/coordinate_geometry_formulas_for_gre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/16164920663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/75589937719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/43773665830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5415/files/dapovigaridoxane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/godovuwavagonusodufaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/advanced_ms_excel_2020_tutorial_free_download_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/balderdash_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/voluwimesekezisasafutodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6658/9335/files/how_to_convert_m4p_to_mp3.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 5

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_off00004ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF6 5048 bytes
SHA-256: c54e11d2d567c7e08450524773658f4329cce55c1f8a84023e8742ef59f8365e
font_01_sfnt_off0000602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 10492 bytes
SHA-256: 92fa43186712017316c3b85443063130f90ecffb5cad648810baa12b0c2eac54

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