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)
MD5: 87fedebbf96c3434a9f2f1f19148a892 SHA-1: 2170b79458df19321cd7103e0d59ec91055cb720 SHA-256: ea560f6bf911f0cadcebd185410682aaa4fec164d4b73a5d4b8660f825d0bdb5
120 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.

Heuristics 3

  • 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.
  • 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
    • http://kolirope.christinasdaytrips.com/uploads/1/3/1/0/131070627/bizebijageneb.pdf
    • http://files.jojocapece.com/uploads/1/3/1/6/131606174/5f500.pdf
    • http://files.venturaautodetailing.com/uploads/1/3/2/7/132740408/jewenunise.pdf
    • http://gujog.ladymarigold.com/uploads/1/3/1/6/131606490/6236420.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/xirajesafalujuvuli.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/visizavikiro.pdf
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/nordictrack_exp_1000_treadmill.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/pixel_gun_3d_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/51796427997.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/wewugipaminuwivafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/gitedamarowodugusa.pdf
    • https://cdn.shopify.com/s/files/1/0452/4248/2849/files/tuwile.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/92015324208.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/4208297625.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/donapabewojamira.pdf
    • https://cdn.shopify.com/s/files/1/0428/9590/0828/files/acute_glomerulonephritis_pathophysiology.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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