Malicious PDF — malware analysis report

Static analysis result for SHA-256 802b77ecdfebb90d…

MALICIOUS

PDF

39.4 KB Created: 2020-09-01 16:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ba51f75a66b8bb5d7733ad7915daad4 SHA-1: b751581b9276cecca2d875615498b780b8417fd2 SHA-256: 802b77ecdfebb90d96aa92ec1f198b65e5caf7caabbd2926fab863530e59289f
150 Risk Score

Malware Insights

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

The PDF document contains a prominent link to 'ttraff.cc', identified as a malicious redirector. The document body, though partially garbled, includes the text 'Yummy mummy tv guide' and the same malicious URL, suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links, many hosted on 'static.usrfiles.com', indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content. No scripts were extracted from this sample.

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.cc/wix?keyword=yummy+mummy+tv+guide
    • https://static.usrfiles.com/ugd/b8c837_0989a225456c4f039edb2dc030704643.pdf
    • https://static.usrfiles.com/ugd/b7306e_6f852b8fdb314f0bab53153d0d828134.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6b7d4e6566648ff8d62b88f85dfd127.pdf
    • https://static.usrfiles.com/ugd/a382ee_231277e624ce41f69bd14fae314db837.pdf
    • https://static.usrfiles.com/ugd/a76634_9b72b346a3fd4e96b58af2927c95f43c.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/revista_natura_ciclo_17_2020_argentina.pdf
    • https://static.usrfiles.com/ugd/defcb2_be3a848106ee466fa011ec94a32443f8.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_60933f45ddf94987949d523fd7c9a3ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7384fd29ade4caf967648eed7c28ad5.pdf
    • https://static.usrfiles.com/ugd/7598fa_10c1c014a97e461aaa9e893a40b79c09.pdf
    • https://static.usrfiles.com/ugd/a18aa6_0bad2f79dc9147e5bf7ee59d1ebdac37.pdf
    • https://static.usrfiles.com/ugd/69695d_ffae1aab01d84a28b287c7288249d491.pdf
    • https://static.usrfiles.com/ugd/b8c837_146b08c34cde469494a55c87ba4bcac1.pdf
    • https://static.usrfiles.com/ugd/b8c837_75a434bea9084e5ca4fdfe3bb1499848.pdf
    • https://static.usrfiles.com/ugd/a18aa6_b1edd300b85047f58ef53657923a5139.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_off00005e9a.bin
e0888f591643220bf40a2375a9b3db890e2d97fb202463fa292069926524c385		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9A 4752 bytes
font_01_sfnt_off00006ecd.bin
75e9b989ae02f77ad495da330ea1f4b31f0f5ea3957ad9a88fbc63c6c5082a4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 10096 bytes

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