Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22a087f1fa8d00d…

MALICIOUS

PDF

56.5 KB Created: 2020-08-19 13:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0f518a6f562cbc4f0f937f419913a70 SHA-1: c087a27b9dabf5e987d9f4aedf6fbcda74137483 SHA-256: e22a087f1fa8d00dd832ce17a20fda266ecb1a7c6a76f9c2fa84f41d643475d9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure via `https://ttraff.com/pify?keyword=algebraic+expressions+class+7+questions+pdf`. The document body, though heavily obfuscated, contains text suggesting an educational context, likely a lure to encourage clicks. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it's designed to redirect users to potentially harmful content.

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=algebraic+expressions+class+7+questions+pdf In PDF document text
    • http://files.thedissertationdoula.com/uploads/1/3/0/9/130969985/zudodebunedufevinu.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/1/0433/0350/1989/files/2116613145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9710/2238/files/aerobic_and_anaerobic_respiration_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/7584741514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/jusawodibofaguzixazemov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/lebaxefip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6358/0574/files/32205134769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6642/4486/files/biw_design_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/milerunuburugebesavom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3644/6613/files/wubezepil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/zunubifusuruwujebibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/julaxomome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/behindertenparkplatz_schild.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1555/1645/files/cisco_finesse_desktop_user_guide.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 4

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_off00009431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9431 5724 bytes
SHA-256: e793bb4bd2f729f815a234c6841638ed6ae2e77d4aa92fa4187752de3836f1cb
font_01_sfnt_off0000a7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B4 14268 bytes
SHA-256: a7c3d95246d8ed19c287afb555ad95c440562ca39a010e44ecf10e580895c121

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