Malicious PDF — malware analysis report

Static analysis result for SHA-256 6607663ff20fc93a…

MALICIOUS

PDF

37.5 KB Created: 2020-08-01 18:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2306aa759064345dbead71e6e6225ef3 SHA-1: 207e1d86023bf913d2f7ad76ad4d9984bdaec47f SHA-256: 6607663ff20fc93a7dd4849813b1814853a91f6e31d59891c92170129aa37cb7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, contains references to URLs that likely serve as lures for phishing or malware distribution. The primary malicious behavior observed is the redirection to a potentially harmful URL, likely to facilitate further compromise.

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=ubuntu+install+mpi In PDF document text
    • http://files.joeyessmaracing.com/uploads/1/3/2/6/132681294/darike_marotetitiji.pdfIn PDF document text
    • http://files.mayahabian.com/uploads/1/3/0/8/130815437/mokaputevojok-dikuxomafelaf-gupujeliloso.pdfIn PDF document text
    • http://files.engravingstation.com/uploads/1/3/1/4/131453022/36c25e044aa1aa.pdfIn PDF document text
    • http://files.nnft.ca/uploads/1/3/1/4/131408250/vekumewixuzek.pdfIn PDF document text
    • http://files.donnchadhoconaill.com/uploads/1/3/2/3/132303410/dexovivi_sobedadev.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/1/0429/1405/4300/files/94204272925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/kindle_cloud_reader_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/46461300294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/31278490965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/kekinegefudil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4437/1613/files/zaxemated.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/ladoruvarikepejul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/pejamukosizixifesemoriwoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/96952480864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/xorijujapavow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/duzerawawepiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/86746728838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/vabajunudifibotin.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_off00005605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5605 5000 bytes
SHA-256: 8ae04c78cdd96509129245a5574032c0743a4bbdc5bee8276ec5b6c90605d4df
font_01_sfnt_off000066fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 10068 bytes
SHA-256: 641678988ea9758810f3182bb6e62abc7d3e5b9a3c4c8559ad3f5b63b3c9181e

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