Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fb7b03f66746a9…

MALICIOUS

PDF

64.0 KB Created: 2020-08-31 10:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8832bf91eeac05b62fd5cbeb6945bd4f SHA-1: 5b07992f5c5a560bf218fc70a9148d390a0d8cf9 SHA-256: e9fb7b03f66746a920de4d4b9e1281faa4b0e1cb0e940e2f807336391d0754bd
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to ttraff.com, disguised as a download button. It also presents a link farm of 14 external PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains the malicious URL and references to other PDFs. The presence of a 'password-protected archive lure' heuristic indicates a common tactic to bypass security gateways.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=akta+graco+cosmic+manual
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/89848197704.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/fashion_trend_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/zipijum.pdf
    • https://cdn.shopify.com/s/files/1/0447/7383/4901/files/fuwekogof.pdf
    • https://static.usrfiles.com/ugd/db93e9_61f3d9c6338549bd9b5ce1c04dcc7b3c.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_dd0ec3e3ddd84d8b89c5d6f3c00b8c17.pdf
    • https://static.usrfiles.com/ugd/067ecb_aa7a9439ebdf43ac9701a543350f8766.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc25def020a549a4badb8957350bcc05.pdf
    • https://static.usrfiles.com/ugd/10e3af_09dbf89e91364a719f9894c8b96c710a.pdf
    • https://static.usrfiles.com/ugd/6da380_d371161af43f4b3cac3e62b3a780cf9e.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/nirijum.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/functional_grammar_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/rejugovub.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
font_00_sfnt_off0000a4e6.bin
b0dc5d52e2afec97a9ff3a0791136e6bb51e0488b7170d8a842ac35f39707466
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E6 5172 bytes
font_01_sfnt_off0000b667.bin
e82d531a881a5fdc5a704713e6da61c5bb4812315e6840e0d55308e34a386bc7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB667 12216 bytes
font_02_sfnt_off0000de3a.bin
2fa4f296fe9e38b1bea2264e65e06c45fbbf4edfcb32b68fd436b1108ab95b01
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3A 16096 bytes