Malicious PDF — malware analysis report

Static analysis result for SHA-256 647875272ff4d5ab…

MALICIOUS

PDF

68.8 KB Created: 2020-08-14 19:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 483390b78fd1f9dacb4ed6d8e398f924 SHA-1: 338fb549d627a4bb5a32750a48d1370ac1625aa5 SHA-256: 647875272ff4d5abbd73b2a583fa9e8caa6510831b3e08b41ea033a18e967fc5
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically linking to 'ttraff.com' with a keyword suggesting a lure. The embedded URL is part of a link farm, and the ML classifier strongly flagged it as malicious. The document body, though heavily obfuscated, contains the same lure URL, reinforcing the phishing or malware distribution intent.

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=commercial+sublease+agreement+template+uk In PDF document text
    • http://files.principledrywall.com/uploads/1/3/2/7/132741194/lidozisizet_moseb_jabaxo_rewugufixaguraw.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/1/0435/7079/0558/files/24941090511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/3338248188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/16302448248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/xslt_group_by.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8243/7028/files/ashrae_fundamentals_handbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/7731/5233/files/14981284994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5033/4368/files/pipojib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/melatozifiwuleko.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_off0000c5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D0 2828 bytes
SHA-256: 85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f
font_01_sfnt_off0000cfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCA 5360 bytes
SHA-256: c85ff8bb16ec69c338ba07e97f83df210f556c9cdd9e89be7f43caee1c5b5e14
font_02_sfnt_off0000e1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E1 9868 bytes
SHA-256: ad193bfdde5c5a5750fb94503f80d0c92ded32b8f6b9f5b793df827ca6a47c78

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