Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b4662e805fadab…

MALICIOUS

PDF

108.7 KB Created: 2020-08-07 03:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b9fc02bd54ab8e7d2b60171ded86e76 SHA-1: 46c8cbda76a7e64f30daed65117eb8e60848dd37 SHA-256: d7b4662e805fadabaf1c8f11a59c26143eeccd25f14330bc5a69232380877981
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=aquaculture+systems+and+practices+a+selected+review+pdf'. This URL is presented within the document body, suggesting a social engineering lure. The ML classifier also strongly flagged this PDF as malicious. The document appears to be a link farm, with many embedded URLs, likely to obscure the malicious destination.

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=aquaculture+systems+and+practices+a+selected+review+pdf In PDF document text
    • http://files.nicksrunclub.com/uploads/1/3/1/8/131856476/xozeris-jefirejamofu-xetunewoluj.pdfIn PDF document text
    • http://files.tilefo.com.au/uploads/1/3/1/3/131380024/7066758.pdfIn PDF document text
    • http://files.colegacysports.com/uploads/1/3/0/7/130739287/famuvarulanik.pdfIn PDF document text
    • http://files.ethelbustamante.net/uploads/1/3/0/7/130775402/benuverafimapinomax.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/1/0434/5331/7272/files/25489139441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/16966340870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/guresetetilaxifudira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2969/1558/files/noveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/58061919617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7832/4117/files/renaming_file_in_unix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/abbyy_transformer_2._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/65987673535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/tijukiradefag.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 8

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_off000167ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167AC 5668 bytes
SHA-256: 2d590ffe63037bf2f082ed2490c045283fba83c28063dcd13f3b6a92750555a4
font_01_sfnt_off00017afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AFD 12880 bytes
SHA-256: cebfadbeaa6eb2ed001fc0393aa5198de25bffbedb3e93517c2299dddee59f26

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