Malicious PDF — malware analysis report

Static analysis result for SHA-256 769d4834003af403…

MALICIOUS

PDF

40.5 KB Created: 2020-08-14 22:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7f21e17d5d89b625f8cd13017e5c424 SHA-1: 8d3152b2af42a0a830e7dc9b2ce63de976d4d6b4 SHA-256: 769d4834003af403097943c6ef78672faaa6ba016a526527547b48d1c9305b5d
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body, though obfuscated, contains a URL that is also present in the heuristics, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicates maliciousness.

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=phenol+chloroform+rna+extraction+principle In PDF document text
    • http://pufub.goucherstudentartshowcase.com/uploads/1/3/1/0/131070036/b0a4939cfe.pdfIn PDF document text
    • http://files.doylestownbotox.com/uploads/1/3/2/7/132712358/xikofuzudevot.pdfIn PDF document text
    • http://files.spectraltech.org/uploads/1/3/1/4/131437711/vukipovosokeke.pdfIn PDF document text
    • http://kidogi.fiongunn.org/uploads/1/3/0/8/130814172/f7325fb9549d885.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/1/0440/0542/5310/files/11576519431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8482/5247/files/95453551594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8260/4963/files/95563677483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/kidijigipudotepazofale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/65229233650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0878/9413/files/simple_present_affirmative_negative_interrogative_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/sixth_sense_technology_abstract.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/xafumowef.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 3

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_off000061ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 5144 bytes
SHA-256: b6992d074c3be4663ba42c6cfe0b2db129c9b0be721ab17887abe78fada99676
font_01_sfnt_off00007321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7321 10084 bytes
SHA-256: d7f0d65e1b63930f6ffa7aa1265feb11f47d24ab4d08f5ef6f603750131e6694

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