Malicious PDF — malware analysis report

Static analysis result for SHA-256 82882f598de9356a…

MALICIOUS

PDF

48.5 KB Created: 2020-07-29 16:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eae92b923c1aec598914a12eb219b034 SHA-1: af9b066138f78bb3a70625ce2a94f9a3eb21f69c SHA-256: 82882f598de9356aeec6fde3e28ad4b75bad055e7516ce12e3ec05501753dce6
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, directing users to a redirector URL. This redirector is likely used to obscure the final malicious destination, which is probably a phishing page or malware download. The ML classifier strongly indicated maliciousness, and the heuristics confirm the use of redirector infrastructure for malicious purposes.

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=advantages+and+disadvantages+of+circuit+switching+and+packet+switching+pdf In PDF document text
    • http://files.hybridpilotservices.com/uploads/1/3/0/9/130969573/7234539.pdfIn PDF document text
    • http://files.hiddenwonders.co.uk/uploads/1/3/0/8/130813906/6af70319bea9a.pdfIn PDF document text
    • http://files.loganshappyrocks.com/uploads/1/3/1/4/131453588/1a462.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/1/0429/6795/7658/files/bogobasawukedivexexis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/98185649626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/22590571164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/32935333389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/pexifunir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/gopijadaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/42421886970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/87988519952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/wijawujetujufuperiweriwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9214/7352/files/3863682257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/59046974215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/binunus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/96508127678.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_off00007da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA0 5472 bytes
SHA-256: 8aa948acb10e93b2b9e1b2e754e84c2ca143ed9bc72511a4e66df38b6d409092
font_01_sfnt_off00009052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9052 10788 bytes
SHA-256: acecdd6a6e38a7e460a6ca43e46c00c3c6ce03c1482b7cdbbfdebfc3f1b32ff3

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