Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4dd387db7f9abb…

MALICIOUS

PDF

41.9 KB Created: 2020-09-08 12:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 075699604e6a0cc6ec58ea20d00f048a SHA-1: f614406eb826330ce41233cec4653578b0d0ace6 SHA-256: aa4dd387db7f9abba8baceda261ba483411f4fe8bb0aa9886e3c51c3979a94fa
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link is designed to lure users into downloading a compressed game. The PDF also contains a large number of external links, characteristic of SEO spamming techniques to improve search engine ranking for malicious content.

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.club/wix?keyword=game+bully+pc+highly+compressed+10mb
    • https://static.usrfiles.com/ugd/c4b402_accfdb66f5fb458a9736b67d5a892942.pdf
    • https://static.usrfiles.com/ugd/8ff694_94e6e50a8ef44839b77beab8d7bd4622.pdf
    • https://static.usrfiles.com/ugd/966478_caf12076d73e49d0bd55969b5cfeacc3.pdf
    • https://static.usrfiles.com/ugd/5a1791_93375f3738ed43cabac2f012770adff6.pdf
    • https://static.usrfiles.com/ugd/5cd33b_84f42a60ed7a45a8b5036678ed78c3dd.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1868/files/comparing_fractions_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/minavagatuxerowokusul.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/15729019079.pdf
    • https://cdn.shopify.com/s/files/1/0433/4338/0631/files/garden_of_words_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/map_reading_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/8004/8037/files/35735920540.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/alcanos_ramificados_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6208/files/find_the_hidden_r.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/80913513014.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9920/files/sipepibapozipukomanulaju.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/84160854606.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_off000063fc.bin
2657e4fd7c7dac4f930283cb16b448f8eca1626c3fc8dd5f9ad9e41d10f6a6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 5956 bytes
font_01_sfnt_off0000781b.bin
dc6795d8c24d8c374c9e33b7b56a538df03eeda45b68414c74b293783295b59f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781B 9972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.