Malicious PDF — malware analysis report

Static analysis result for SHA-256 3daca218764b8113…

MALICIOUS

PDF

58.6 KB Created: 2020-07-28 06:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cfdfda1e16353a9be1008521a441cac SHA-1: 2cdcc4a807044e3b5f80a8430a0b7b9eacea8043 SHA-256: 3daca218764b811399fa12b0724367a94eebd1fd2b723a5acd6e1e4a1fc6bbce
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The primary malicious URL, 'https://ttraff.com/pify?keyword=absorbed+dose+pdf', is identified as a redirector. The document body, though heavily obfuscated, contains keywords related to the embedded URLs, suggesting a lure 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=absorbed+dose+pdf In PDF document text
    • http://files.columbiacountymhc.com/uploads/1/3/0/7/130739789/vamona.pdfIn PDF document text
    • http://files.casa-de-colores.com/uploads/1/3/0/7/130776162/1873473.pdfIn PDF document text
    • http://files.designwithwisdom.com/uploads/1/3/0/8/130873983/tazil.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/1/0431/9579/3557/files/sotuwoterubogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/61998768286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/22716437969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/pedataratufer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/61779554752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/2565928838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/rexonimetosafoxila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/setapikukogebofigatetoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/1454380170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/21109039709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/zewafi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B0 4476 bytes
SHA-256: 4485aa587862293483a93aa5d0fc818b1a46cd30326725637452d89b06095423
font_01_sfnt_off0000a3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3DA 10972 bytes
SHA-256: 1f506e844a163351a743ae993179c91b252202cb2833bbda8173e68e7fbdbdf8
font_02_sfnt_off0000c89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89D 16088 bytes
SHA-256: 03960e94341ab841137cbe6197103fffd30a7fafefedd10e64b418088fbffec0

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