Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d62a3b04fe0c944…

MALICIOUS

PDF

46.7 KB Created: 2020-08-19 23:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e9d211ccbb8befa3256a70f2af05526 SHA-1: 97de5a908878fc288346c45933959d6dc46bdec6 SHA-256: 7d62a3b04fe0c944b95155df354660e42b933bc2b1cdfab08bfc1fc118ca76bc
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=biomedical+importance+of+carbohydrates+pdf`, which is designed to lure victims into downloading further malicious content. The ML classifier strongly indicates maliciousness, and the presence of multiple external links points to a link farm strategy for distributing malware or phishing content. No scripts were extracted, but the embedded links are the primary attack vector.

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=biomedical+importance+of+carbohydrates+pdf In PDF document text
    • http://files.thepygmygoatclubofireland.com/uploads/1/3/1/3/131383444/xusoguw.pdfIn PDF document text
    • http://forumox.herbesque.com/uploads/1/3/1/6/131637136/6716099.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0433/1234/9334/files/kibirurodazitafaminawujin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/discrete_probability_distribution_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7506/6273/files/28453838141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/popovasor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/81984861381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/66229403094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/jazijudovojalowulisigabuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7827/8550/files/24597735770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/advanced_systemcare_pro_9_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/dubaxodirojarerokulib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1337/3084/files/alleluia_marcelo.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_off00006eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 1684 bytes
SHA-256: 4d3fb6748bdbfc0676bbc246a341b567ec3707c335db72ae26270b639488ab50
font_01_sfnt_off00007715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7715 5688 bytes
SHA-256: 231e389cb85137ac4da15b4e31f26e27983bb86166e1feb2636d614cb2319d35
font_02_sfnt_off00008a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 10284 bytes
SHA-256: 5590560d963fca4198bde7eb9d53e1692c3cba274c6a9b9cc1dd4df14c1c2316

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