Malicious PDF — malware analysis report

Static analysis result for SHA-256 c449ffd8e1155147…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 01:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b19e3995b6d9446cba597f4df3c08d3 SHA-1: e7b2546bb6557faf0a3cd55db7045a62f49ac1c2 SHA-256: c449ffd8e115514718d81ad0e7bac2ed01ca2b6cb10973feadf702fff3b9ddbd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'English grammar rules pdf' and the malicious URL. This suggests a social engineering lure to trick users into visiting a malicious site, likely to download further malware. No scripts were extracted from this sample.

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.ru/pify?keyword=english+grammar+rules+pdf In PDF document text
    • http://zumuzisu.cphcoffee.com/uploads/1/3/1/3/131379326/fd71c877.pdfIn PDF document text
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdfIn PDF document text
    • http://files.canbryresearch.com/uploads/1/3/0/8/130874679/xodopazawaza_newusavon_kevilub.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/1/0432/1086/6851/files/temufufekixur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/8489230218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/17150409084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3825/0910/files/gif_to_webm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/xuvogaxudimip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/data_mining_tutorial_point_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4018/files/reading_skills_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/sociologija_knjiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/6131250441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/30011669618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/71511929362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/51270795339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4504/3880/files/rudekagafira.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_off00006c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 5412 bytes
SHA-256: 431cacdbade511d9fc35043c74f015488e5d8933792a7cb54820c8d73e0b2dfa
font_01_sfnt_off00007e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E52 10248 bytes
SHA-256: dca082f750d1d059c1aba0d1734169c8032a9312758964e8fc9d614df5cc26b1

Open this report in the interactive analyzer, or submit your own file for analysis.