Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2f8bf7aaf51abd…

MALICIOUS

PDF

34.6 KB Created: 2020-07-31 22:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4184b4a903efcc7ac6598b3eec73fcb9 SHA-1: 8fe8a5a3cd3bc56ca419a0513a84a0ae85b53173 SHA-256: 6e2f8bf7aaf51abd8a4997735e8005acbb2d217313dcbfddbac57078f48d35b4
194 Risk Score

Malware Insights

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

The PDF document contains a lure for a download, which redirects to a known malicious redirector infrastructure. The document body itself is heavily obfuscated but contains embedded URLs that are part of a link farm, likely for SEO manipulation to drive traffic to malicious sites. 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.ru/pify?keyword=jacquees+feel+it+download In PDF document text
    • http://files.happykidscambodia.org/uploads/1/3/0/7/130775918/defanixorodof.pdfIn PDF document text
    • http://files.westwoodpubliclibrary.org/uploads/1/3/2/6/132696063/98aa37a563521.pdfIn PDF document text
    • http://files.whitemouthriverrec.com/uploads/1/3/1/8/131856743/6df6a8ec97.pdfIn PDF document text
    • http://files.lizsandwick.com/uploads/1/3/2/3/132302764/7346280.pdfIn PDF document text
    • http://files.ayecanchange.info/uploads/1/3/1/4/131438419/pizefemoseku-togalipabon-riririnexagul.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/saran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7602/6522/files/zibedizalopemisus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/97066049944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5209/files/nalemiminupivadezikuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/2936596051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/lofilanoberorilis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/55616381637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6153/3089/files/jefivetalatikilulev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/kikotupivevodozofodovewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/11815467638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/88204349483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/90670725801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/15700179496.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_off000048ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BA 5128 bytes
SHA-256: cbc296fed835f05e5d66bbecc5fcb06119ff3e751891b5ab9eb799addec4b831
font_01_sfnt_off00005a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A54 10328 bytes
SHA-256: 6ed9ec87a475dc0d178e53aff9693dbbe01c6fcf169b3afc073c656d34ff8751

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