Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a364ba67f055a68…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 08:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33e0d075bc5b81aa3b33e186ac1c7e9d SHA-1: 04f35e9a29aaca3b102985164285a84edb6793e3 SHA-256: 1a364ba67f055a6895873dd76f99da8ef27bd671c0c7e4f02e6b8ef0eed0a8cc
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and other links pointing to Shopify and various domains, suggesting a link farm or redirection scheme. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to click on these links, which likely lead to malicious content or phishing sites.

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=cassandra+fox+dance In PDF document text
    • http://todefowo.clcduncannon.org/uploads/1/3/0/8/130815017/8257377.pdfIn PDF document text
    • http://files.secondarysummerreadingprogram.com/uploads/1/3/0/9/130968950/degijexus.pdfIn PDF document text
    • http://files.tusilifestyle.com/uploads/1/3/1/4/131453241/0303cea79f.pdfIn PDF document text
    • http://files.fnmiec.ca/uploads/1/3/0/9/130969710/7682567.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/25406484583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/30129571744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/15812022281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/29851883768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/dikulet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6450/9094/files/41565721766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/lesunugopifukujepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/13654262605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/80663994622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/teachers_pay_scale_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/dusori.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 4

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_off00005e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2C 4732 bytes
SHA-256: 91a48f9f2ea106d53f26e701048f5130db7f8c411dc8713e1dd7bec5b3758ae0
font_01_sfnt_off00006e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3C 10452 bytes
SHA-256: 5f6c2dd9e2a050ff8561792661f065ea0d90e72476f560434d7c6ab70157b317
font_02_sfnt_off0000920a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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