Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b658dabed9d361…

MALICIOUS

PDF

39.8 KB Created: 2020-08-25 23:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a49de0683d28293623a4752b6c261d79 SHA-1: cec6ec164a0c0ce9845b3e8931d5dbe5502522dd SHA-256: a3b658dabed9d3610c6612ff73bf50b56b20b50fc31ea0cf52a4a76163b7d037
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=gay+bars+in+lexington+ky', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL. The presence of numerous links, including a malicious redirector, suggests an attempt to lure users to malicious sites or to manipulate search engine rankings.

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.cc/pify?keyword=gay+bars+in+lexington+ky In PDF document text
    • http://files.wolsinghamwayfarers.co.uk/uploads/1/3/2/7/132740375/1391454.pdfIn PDF document text
    • http://files.adamsstringshack.com/uploads/1/3/2/6/132681928/9d295fccb566f.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/1/0429/5340/8675/files/form_e-_595e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/partnership_business_plan_sample_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0473/9232/files/aula_de_espanhol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/bristol_fire_pump_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/51886581075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/3639322304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3002/8194/files/83191019188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1787/5110/files/aarti_sangrah_marathi_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8597/1112/files/47769544007.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 1

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_off00005ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA8 5256 bytes
SHA-256: c165767e44bead29ba1c40d60bcf26a5afc44e343be6ff19682b425c321c65fa
font_01_sfnt_off00006eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB6 10660 bytes
SHA-256: 74eb75f9be010ce231ce7cae9e21fc2e3f3ce811efce5ca9f6cf853052b1abc0

Open this report in the interactive analyzer, or submit your own file for analysis.