Malicious PDF — malware analysis report

Static analysis result for SHA-256 92bbc381e801ddb4…

MALICIOUS

PDF

44.8 KB Created: 2020-07-28 22:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34354f95e6e5ce1642418de75a8b072e SHA-1: 8eb1c9a9c4b2dadc097a680cc523f53910cc7fe5 SHA-256: 92bbc381e801ddb473a12dfea4c494a107f9b743f2c1e820065b635453e5929b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.cc) disguised as educational worksheets. This suggests a phishing or malware distribution attempt. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards a social engineering tactic 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.cc/pify?keyword=fiction+and+nonfiction+worksheets+for+kindergarten In PDF document text
    • http://files.floridaaquaticbiologists.org/uploads/1/3/1/3/131398250/6480983.pdfIn PDF document text
    • http://files.soulcarecompanions.com/uploads/1/3/0/8/130813601/9abb0813.pdfIn PDF document text
    • http://files.victorheritagesociety.com/uploads/1/3/0/8/130814169/mijudoseler-zorafuza-benudi-kuwuxo.pdfIn PDF document text
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.pdfIn PDF document text
    • http://files.hanmaumchurchdfw.com/uploads/1/3/2/6/132696330/kuwoburub-wobeganeb-wisajoromivat-takotokosi.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/1/0433/0687/7080/files/24863128440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8189/8913/files/jikezarisugavowev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/puwezobanuxedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/sexekobiwatedek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/75513241993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7147/1767/files/64552572500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/95084864154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/24946903180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/16010166272.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6908 5152 bytes
SHA-256: 535f492466cce063674ae5034d4218a59bfd61fa5bc9f20770fdc66f703ed3ed
font_01_sfnt_off00007a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8B 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8318 10068 bytes
SHA-256: c35d46c11c937688b564ceb2b9529747aac8ce7ea4da0acb25ed528405304af6

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