Malicious PDF — malware analysis report

Static analysis result for SHA-256 4333249c63ea0be6…

MALICIOUS

PDF

49.8 KB Created: 2020-08-09 12:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d09cf27dd764cbfa6c73e7025e22c13b SHA-1: bb8d21e2c86ac6dfee4a725de824ce38c73817ef SHA-256: 4333249c63ea0be6a725d153b9f66feb9d479384907f08115184aaee7775c222
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate downloads. One prominent link, 'https://ttraff.com/pify?keyword=multiple+regression+analysis+in+spss+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting malicious infrastructure, 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=multiple+regression+analysis+in+spss+pdf In PDF document text
    • http://files.nswoysters.com/uploads/1/3/1/3/131380600/4193466.pdfIn PDF document text
    • http://jurezife.cropmarksprinting.com/uploads/1/3/0/8/130873995/radema_fogexos.pdfIn PDF document text
    • http://files.momentsintheword.com/uploads/1/3/1/6/131607310/5769930.pdfIn PDF document text
    • http://zutuni.brooklifestudents.com/uploads/1/3/1/4/131407995/9615859.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/1/0433/5868/3294/files/antiviral_drugs_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/63844216752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/55536769972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/31481366376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/fugudilizurav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/convert_png_to_svg_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6813/files/33808971590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/30019380028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/36777550344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/cacahuates_garapiados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/73931683174.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_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 5316 bytes
SHA-256: 9c3ac4c9a4d7d39bb5d39cfb02a88a6251451fafd784df8909ed00b0ec6e1788
font_01_sfnt_off0000958a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958A 10552 bytes
SHA-256: a679a56811180495d9484dba601cac7961d38cad01e3af151ba2ec882fb6177b

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