Malicious PDF — malware analysis report

Static analysis result for SHA-256 da877210d146c219…

MALICIOUS

PDF

41.8 KB Created: 2020-09-09 01:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c07107f0c466ab3a9c8e69bc435c289 SHA-1: d3569ef63d0ddcd1ba19cc85512ac71b9d8aa3fd SHA-256: da877210d146c219c52d2d6a101a32926c5717f283d99fc0933518c62990a615
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=public+finance+administration+pdf'. It also contains a PDF link farm heuristic, with many links hosted on cdn.shopify.com, one of which is 'https://cdn.shopify.com/s/files/1/0430/2526/8889/files/fazeguwatadomenomo.pdf'. The document body, though heavily obfuscated, contains the same redirector URL and several cdn.shopify.com URLs, suggesting a lure to a malicious site disguised as a document.

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.me/wix?keyword=public+finance+administration+pdf
    • https://static.u
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/fazeguwatadomenomo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/72119996889.pdf
    • https://cdn.shopify.com/s/files/1/0429/2083/7279/files/gunolimetejekosowosizopul.pdf
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/57731967522.pdf
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/sunefawovuxedodego.pdf
    • https://static.usrfiles.com/ugd/b8c837_52cc22bbb8c04c398fb28627c88c81bb.pdf
    • https://static.usrfiles.com/ugd/3d7af5_9344784f069a415c9fe5144dca6e282b.pdf
    • https://static.usrfiles.com/ugd/32777b_0961a35b1be24d96a7662daaf1f4f844.pdf
    • https://static.usrfiles.com/ugd/80685d_21818a76b3f7445287b49384a763125c.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0119/files/soul_surfer_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/54699466288.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokesinoximirupabujikupoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5840/files/kutawiji.pdf
    • https://static.usrfiles.com/ugd/6f9b04_faa201b78b1640c28dfd1b7844fca6ae.pdf
    • https://static.usrfiles.com/ugd/f6336d_bf9e0dfd7c904fd6ad38dfd2866ec7d0.pdf
    • https://static.usrfiles.com/ugd/c88839_61a6268c6a1f40298b575f635d496dc9.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_452456e8c9f648c78ca2cdcd22eb1560.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_off00006511.bin
59fd748668038693e9bedca472246820f17325b6ca5484f44d79e0b8da7bc10e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 5444 bytes
font_01_sfnt_off00007778.bin
4554e908cd7aba0a8c85e62c34f75f600242c45000e0612b33c794bc4c28a853
pdf-font-stream PDF embedded font (sfnt) at offset 0x7778 10048 bytes