Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b28c6b5233373b4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 04:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2777718789c467a0577b028eb0a5e5ea SHA-1: 338f7f0c39234638f30c500e0721f8e5b88bb983 SHA-256: 5b28c6b5233373b468c023b575b5d8867acf7749d7b3f11414a6124767262704
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirector infrastructure, disguised as free downloads. The primary redirector URL is https://ttraff.com/pify?keyword=large+amount+formal+synonym, which likely leads to a phishing or malware distribution site. The document body itself contains obfuscated text and the malicious URL, indicating a social engineering attempt to trick users into clicking the link.

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=large+amount+formal+synonym In PDF document text
    • http://files.theagingmusician.com/uploads/1/3/1/4/131453031/9376970.pdfIn PDF document text
    • http://sexewiriw.adamwestonalbert.com/uploads/1/3/1/4/131437709/lipewore.pdfIn PDF document text
    • http://files.hautespotdestinations.voyagerwebsites.com/uploads/1/3/0/7/130776407/0943b.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/1/0435/9605/4690/files/reading_strategies_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3287/0044/files/apache_commons_cli_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4019/2150/files/shutter_island_putlocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/11765282080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/california_dmv_test_questions_and_answers_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/denawafateluniserudozenuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4211/0631/files/bible_history_old_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/kikuyu_bible_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2849/5001/files/37444153172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/zifixuximujebom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/42956291797.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 1

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_off00006658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 5132 bytes
SHA-256: 9fe6f3bcb73eed12ab32e52e44732617c6544bdfe81b41c06ec7703b45f1e30b
font_01_sfnt_off000077c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C1 10848 bytes
SHA-256: 9857e40d513d5b7baa7696b7ee8ee7be7a798a4febc7f6d9f6c6937ce595be84

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