Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66c585b7f36a44a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-19 17:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e4edad864ea681c6a20e7f9dd8b42ff SHA-1: dbd90e9d59e9f11177e1592d05194a077d1dd49e SHA-256: d66c585b7f36a44a07d08a5a0541fe5a1ef0e3bd23c51a1e5773c0df2733611f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be redirecting the user to a malicious site, likely for phishing or to download further malware.

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=ecfmg+epic+report In PDF document text
    • http://lologik.lightfactorystudio.com/uploads/1/3/0/7/130740609/9587863.pdfIn PDF document text
    • http://files.castlecreationsflorals.com/uploads/1/3/1/4/131483154/duliledib-ribovabasabuta-noribav-nijidani.pdfIn PDF document text
    • http://files.listentofusionn.org/uploads/1/3/0/7/130739011/c2f8f.pdfIn PDF document text
    • http://files.oneshop42.com/uploads/1/3/1/3/131398560/demulesug_wuxativun_fofel_texew.pdfIn PDF document text
    • http://kapij.cardiganbayregatta.co.uk/uploads/1/3/1/4/131438096/cdc3b3557212d66.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/1/0429/8237/5577/files/problem_solving_tasks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/34511834019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/55314934592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/28332115511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/21226989453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/vesulosavavusafukonege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/48195121731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/24162455400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/nosozewotizetinawef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/62205501060.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 7

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_off00006285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 4872 bytes
SHA-256: 87e33073f454574e2d85be5cb925fe811891a9e601d83737b9fe0d72dbeff78f
font_01_sfnt_off00007309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7309 9848 bytes
SHA-256: 4a343648f94b36f15fbf8e667cab7a6049c6d89b0511db50d1246f32ae6c6e1d

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