Malicious PDF — malware analysis report

Static analysis result for SHA-256 510cbadf7be3b4ca…

MALICIOUS

PDF

50.5 KB Created: 2020-08-16 22:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4990357063d1070d6f5f4f4393646c8e SHA-1: f800a688cd252e0055bbce9da32f5577c4dfe568 SHA-256: 510cbadf7be3b4cabd06f528358927cbb6ac1fa4aaeacd5aa38a004834ddb8f3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=lijiang+map+guide. No scripts were extracted from this sample.

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=lijiang+map+guide
    • http://files.esteemvocals.com/uploads/1/3/2/6/132695372/lubiku-xexobepabujewa-gifegofoje.pdf
    • http://files.ctforkids.com/uploads/1/3/1/8/131856353/7f9af85b2bcd.pdf
    • http://sukojoman.balancevc.com/uploads/1/3/0/8/130874493/4ebf5eb.pdf
    • https://cdn.shopify.com/s/files/1/0432/6119/8500/files/tulinegipuzigi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/bodo_language.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/jab_comics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/faxitikemenati.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/sword_and_sandalas_3.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/51540413611.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/44577067953.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/xokopirefuvirez.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/login_page_template_github.pdf
    • https://cdn.shopify.com/s/files/1/0430/8041/7447/files/afridi_tribe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/38520534345.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/fatumuwunutipexaradewud.pdf
    • https://cdn.shopify.com/s/files/1/0437/1585/4490/files/maneparunuzurozovike.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006896.bin
844945fd11c009edcee3aa8745771553aa415850e820a92fef8d1a832eb16c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6896 3256 bytes
font_01_sfnt_off00007432.bin
3aca880db72c5012df2e85e44cc8d0115760ea822f5139d08fb0d62c8d2bdfee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7432 4992 bytes
font_02_sfnt_off00008520.bin
af98e70deaf9a22b3ca73f621450782f7934a35433557b84eeace91c9aafffe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8520 10192 bytes
font_03_sfnt_off0000a839.bin
bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA839 16060 bytes

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