Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d9bc04e586c24b…

MALICIOUS

PDF

45.8 KB Created: 2020-08-07 06:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abdd4f5984feed682b5a24c232eed600 SHA-1: 5452d2b942f2443b33ab7cec611bef29cc86dd63 SHA-256: 11d9bc04e586c24b895b7ec4bf866246a3c72920956db25ddd7e23fb22507d78
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, also contains the same redirector URL, suggesting an attempt to trick users into downloading further malicious content. The presence of a large number of PDF links, many of which are SEO-optimized, indicates a link farm or phishing 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.com/pify?keyword=ancient+egypt+social+structure+pdf In PDF document text
    • http://files.ororossodelmonferrato.com/uploads/1/3/1/1/131163632/1350963.pdfIn PDF document text
    • http://files.sustainabu.org/uploads/1/3/2/6/132695582/lopijuwawomupepajo.pdfIn PDF document text
    • http://files.dippedindope.com/uploads/1/3/1/3/131379353/fodibomibojok-womuzusom-xivubowerunu-tapakesoka.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/1/0440/6296/5912/files/nonolusapapenopepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/download_single_file_from_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/84130775150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7450/2312/files/15169574745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/lerusudufulipokudixakaxis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/28510972195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/masewobelitaxelak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/nezisela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/71924918089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/tuzonexilamemivar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/23513050784.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_off00006742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 5296 bytes
SHA-256: 8b9d4fc94db7663cb67cf333310823cd54c526669635e218c94c543c43bfe20b
font_01_sfnt_off00007958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7958 10264 bytes
SHA-256: 6aea9442ff155094cac112f42f236c5ab983c379934a299f01a1d45c59cdfa19
font_02_sfnt_off00009c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C32 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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