Malicious PDF — malware analysis report

Static analysis result for SHA-256 139bb2b30b0c7501…

MALICIOUS

PDF

43.4 KB Created: 2020-08-20 04:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53dc1d97b4267f284d9db2972aa04fa2 SHA-1: 85b272fbe3160bd9b17d1c2c18e41df4061b03dd SHA-256: 139bb2b30b0c75011485117ce0806ed36f85a1697807d87271fa38357dd1d81f
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=parallel+structure+worksheet+pdf+with+answers', suggesting a lure to download further content. The presence of numerous external links and the ML classification strongly indicate a malicious intent, 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=parallel+structure+worksheet+pdf+with+answers In PDF document text
    • http://files.saintgeorgeupperdarby.org/uploads/1/3/0/8/130874595/weninibe-libiganidug-jaxen-fununozabefazid.pdfIn PDF document text
    • http://wasotut.williamsburgnaz.org/uploads/1/3/0/8/130814328/0069746306f2c.pdfIn PDF document text
    • http://gizijow.mylittleschooltoronto.com/uploads/1/3/2/7/132740328/6939378f7e.pdfIn PDF document text
    • http://desifel.amydowell.com/uploads/1/3/1/3/131379678/gewovunegalekemo.pdfIn PDF document text
    • http://nejuzajo.intuitivetouchworld.com/uploads/1/3/1/4/131454165/tagefifebarab.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/1/0450/4938/1022/files/86164832583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/muzewugima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3934/9146/files/91906065544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gikari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/famijefujilevox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/attendance_management_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kumug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/buzzer_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/curso_frances_principiantes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7925/4694/files/sepasosidusom.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 2

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_off00006b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 5400 bytes
SHA-256: 69b1093ab323de8a7b37e6b4ad060822211c1c43d5ed8bf24788da846b6ca16f
font_01_sfnt_off00007dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCE 10136 bytes
SHA-256: dbdd3412940215c1b03b97af75a39a56b4e25d7c2438d792a8defd70f68a4e20

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