PDF malware analysis — malicious · 4769a28d8272434e

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 05:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd05f4c6a75bcf4776ddb665e2d3ca36 SHA-1: 5bb9b2988b6f7f0eadd474bdf42a2f3ffd40947b SHA-256: 4769a28d8272434efc2cb1c1abfdb802497687799fdcf6006ed972bd4cbea186

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link disguised as a song download, which is identified as a malicious redirector. The document body, though partially corrupted, includes the same lure text and the malicious URL. The presence of a large number of external links, many pointing to PDF files, suggests a link farm designed to attract search engine traffic and potentially distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=kannu+athu+gannu+mathiri+song+download
- https://cdn.shopify.com/s/files/1/0434/9739/0244/files/principles_of_foundation_engineering_6th_edition.pdf
- https://cdn.shopify.com/s/files/1/0435/5253/8787/files/4147721691.pdf
- https://cdn.shopify.com/s/files/1/0431/7259/3832/files/koxuxozosulikib.pdf
- https://cdn.shopify.com/s/files/1/0431/7849/2062/files/sofarogud.pdf
- https://static.usrfiles.com/ugd/b8c837_550f68f02b6f4b3cba9e291ed6ac1e45.pdf
- https://static.usrfiles.com/ugd/affaa6_613eee684c224dad80ab2a48521a5a5d.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/60426435347.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
- https://cdn.shopify.com/s/files/1/0436/1987/7024/files/61628469879.pdf
- https://cdn.shopify.com/s/files/1/0439/0807/1592/files/81030192355.pdf
- https://cdn.shopify.com/s/files/1/0432/7797/5717/files/gleichungen_lsen_textaufgaben.pdf
- https://cdn.shopify.com/s/files/1/0427/7751/0055/files/us_citizenship_form_for_under_18.pdf
- https://cdn.shopify.com/s/files/1/0440/6866/7542/files/minecraft_id_list_1._14.pdf
- https://cdn.shopify.com/s/files/1/0462/6140/3802/files/82071619708.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004f67.bin` `c582a0969b5f42ea78a13eb17da0f3566ae0bd7465a924aa0c41d4e9142e4204`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F67	5300 bytes
`font_01_sfnt_off00006149.bin` `1e18058ef2a9379250f7e8b15e64fb6c3f7bfb356d9166f28987e5a2314e4707`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6149	2496 bytes
`font_02_sfnt_off00006c48.bin` `e20bba404cca47ee650cb1a62c3202fa6d9b29cb2f9106da9a8aaf93dace5d32`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C48	11664 bytes

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