Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c3dd12867a634e…

MALICIOUS

PDF

41.0 KB Created: 2020-08-21 03:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ecd7fb0399fe09b0c1b1340fdac1163 SHA-1: a2a07dba93508f8b7c20e3462102df80ee2c59b9 SHA-256: 64c3dd12867a634e0302547679d9f799cdf54612643a939da02e1099444eddea
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=how+to+create+report+writing`. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, also contains this URL and other links to PDF files, suggesting a link farm or phishing lure. The ML classifier strongly indicated maliciousness, supporting the interpretation of a phishing or malware distribution attempt.

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=how+to+create+report+writing In PDF document text
    • http://files.aliveleadership.com/uploads/1/3/0/7/130775014/navajifog-wewizenolifi.pdfIn PDF document text
    • http://files.sonjanagy.com/uploads/1/3/1/3/131384635/3023831ee0.pdfIn PDF document text
    • http://files.streetfightersunitedkingdom.com/uploads/1/3/1/4/131437878/3c353d051f22fd3.pdfIn PDF document text
    • http://wiwosur.fomuchskateboards.com/uploads/1/3/0/8/130814017/8363154.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/1/0432/5136/8104/files/html_grid_template_areas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/miweduvonef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/lajemotimezufedaporuzol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4162/6011/files/3054267804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/bsc_nursing_form_date_2019_lucknow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/pdf_epub_to_kindle_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/27391234041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/wowegabefosuzojanikez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/2823177797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/57898335583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xifosikalulip.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_off00006338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 4944 bytes
SHA-256: 2ff14a327708721c54268af882c03511c9631f9bdb13071faa617c54319ce49b
font_01_sfnt_off0000742b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 10272 bytes
SHA-256: dbc1987e28924574ae587866029f5d926a78b43f458795d3429ec668c08eaae6

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