Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea560f6bf911f0ca…

MALICIOUS

PDF

44.1 KB Created: 2020-08-15 00:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87fedebbf96c3434a9f2f1f19148a892 SHA-1: 2170b79458df19321cd7103e0d59ec91055cb720 SHA-256: ea560f6bf911f0cadcebd185410682aaa4fec164d4b73a5d4b8660f825d0bdb5
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used in SEO link farms to manipulate search engine results or distribute malicious content. One of the primary links points to a known malicious redirector, 'ttraff.ru', which is configured with a keyword related to 'discord music bot'. This suggests a lure to attract users interested in such topics, leading them to potentially harmful destinations. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific payload.

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.ru/pify?keyword=discord+music+bot+without In PDF document text
    • http://kolirope.christinasdaytrips.com/uploads/1/3/1/0/131070627/bizebijageneb.pdfIn PDF document text
    • http://files.jojocapece.com/uploads/1/3/1/6/131606174/5f500.pdfIn PDF document text
    • http://files.venturaautodetailing.com/uploads/1/3/2/7/132740408/jewenunise.pdfIn PDF document text
    • http://gujog.ladymarigold.com/uploads/1/3/1/6/131606490/6236420.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/1/0432/8259/6004/files/xirajesafalujuvuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/visizavikiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/nordictrack_exp_1000_treadmill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/pixel_gun_3d_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/51796427997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/wewugipaminuwivafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/gitedamarowodugusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4248/2849/files/tuwile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/92015324208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/4208297625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/donapabewojamira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9590/0828/files/acute_glomerulonephritis_pathophysiology.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E50 5168 bytes
SHA-256: e2401d6cea7d128a27b78c34a342f9b5c526ff8ee3e55ca6b7df79b632fd6927
font_01_sfnt_off00007fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC7 10512 bytes
SHA-256: 4e5d354edbd8ea57e77689df8b4ac02155df27fa1c7ef1fb81b3660c6901848e