Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f08675796b3f68…

MALICIOUS

PDF

41.1 KB Created: 2020-08-01 19:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 884b2f5a1db7a8fe8d40b479fcc5b129 SHA-1: 3fb30d5679c148d35ea199f03d8cd23f12c015d8 SHA-256: b6f08675796b3f68b2eb10ae54958f9270c12199c8b3161ecbf78ff0dbe9e98c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=ancient+wyvern+ds3', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to these URLs, suggesting the primary purpose is to redirect users to malicious content.

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.cc/pify?keyword=ancient+wyvern+ds3
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.pdf
    • http://files.edinburghtabletennis.com/uploads/1/3/2/6/132681884/fesexipuvokupuko.pdf
    • http://files.micksmobilemusic.com/uploads/1/3/1/8/131856277/59af19.pdf
    • http://files.100youthwhocarecentralyorkregion.com/uploads/1/3/1/4/131438437/7d801585752be.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/verizabojazimoxizijudoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/57633936826.pdf
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/pijaxanetumurezanuzisaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/41354229400.pdf
    • https://cdn.shopify.com/s/files/1/0431/5827/4205/files/kesezunepup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/31970953427.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/50079240468.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/3068667265.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3323/files/13001027437.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/sizorobinopeko.pdf
    • https://cdn.shopify.com/s/files/1/0430/2694/0067/files/down_in_the_dm_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/vamuxis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/88376072071.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_off0000632f.bin
cc2416e8719672238d9bbc45d1ed4c47e3e9049519b39196cade8390481f7da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 5100 bytes
font_01_sfnt_off000074ba.bin
b6d4aa4c29de98b1ef69c5fd3c6be32679eb8d34780f3b0ac635277b78f72167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BA 10304 bytes

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