Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c8f5c3c688b5a8…

MALICIOUS

PDF

49.4 KB Created: 2020-09-03 21:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0616a99e8702b2075fc07c45dc04c6f9 SHA-1: 6dd9d583d99410bebe7c27a876c38406ca629e83 SHA-256: b6c8f5c3c688b5a813bf18f87a43af7ac90d8a118062084e61f4fee23c6668e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded links, one of which, 'https://ttraff.link/wix?keyword=s3+inventory+report+pricing', is flagged as malicious. The document's content and structure strongly suggest an advance-fee scam, using lures related to inventory reports and potential prizes or funds. The presence of numerous external PDF links, many pointing to static.usrfiles.com, further supports the link farm heuristic, indicating a coordinated effort to redirect users to potentially harmful content.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.link/wix?keyword=s3+inventory+report+pricing
    • https://static.usrfiles.com/ugd/b8c837_64f0dd99f05a4b548b776fd9b4b409ed.pdf
    • https://static.usrfiles.com/ugd/9a242c_2f98a29dcd1e4e68b134bc09f3bc7978.pdf
    • https://static.usrfiles.com/ugd/01e791_c53d0f0d1fc64790bee7410e53237682.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/64761777530.pdf
    • https://cdn.shopify.com/s/files/1/0464/6843/2040/files/18120669335.pdf
    • https://cdn.shopify.com/s/files/1/0448/1577/7954/files/ririgutegenamajimesages.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec97949417784b42addb4dcfc33af21e.pdf
    • https://static.usrfiles.com/ugd/49be48_a2b31891384f47049ebb72ce56e21876.pdf
    • https://static.usrfiles.com/ugd/93971e_9c4986592e5a43bca466346b7154d7a2.pdf
    • https://static.usrfiles.com/ugd/77d535_e88e8de38a0f44069104200d05b58f53.pdf
    • https://static.usrfiles.com/ugd/ae15ca_ac07f24ee3004647ad3272d57b012d21.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009f27.bin
108678ea2d994d2f08b76a7041e2fb29d51c09915de1b720f1c1e02023cdc6f4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9F27 17396 bytes
font_00_sfnt_off00006bdd.bin
15ae9ac3903638d739fa55caefc6ac4f92ffac6c7b05b7f098ae0de8e8b3330b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDD 5108 bytes
font_01_sfnt_off00007d6c.bin
1bf37655344c3654ff3c35ebc6d24e4d3a2df7946532baee5e29e79b95a7cb20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6C 9796 bytes

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