Malicious PDF — malware analysis report

Static analysis result for SHA-256 b493b9d95b82061b…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 11:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9a5912ba9c53b90f4eee7dc477b76a7 SHA-1: 9ca88444e2fd3f2388587953940d444be35018c2 SHA-256: b493b9d95b82061b13e8b2f4611cfbcd58de96b0f1d0f01c9df8947674ae550c
178 Risk Score

Malware Insights

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

The PDF document contains a lure for a browser extension installation, presenting itself as a PDF to DWG converter. It embeds numerous links, including one to a known malicious redirector at ttraff.com, which is likely used to deliver a secondary payload. The document body, though heavily corrupted, contains the malicious URL and references to a download. No scripts were extracted from this sample.

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=pdf+to+dwg+converter+free+download+crack
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/3079571462.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/3753254728.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9204741539.pdf
    • https://static.usrfiles.com/ugd/de3d83_5364fe69b8624461b5aae14d4cad401a.pdf
    • https://static.usrfiles.com/ugd/7ff653_64907f7bd980491d8d96b3fff81892df.pdf
    • https://static.usrfiles.com/ugd/8cbfce_8998a4bbf7494b1d9ebbe3ce1c6243cb.pdf
    • https://static.usrfiles.com/ugd/09c3c7_38aff0e2a31d4aea93ac2f608618b82e.pdf
    • https://static.usrfiles.com/ugd/6116da_32359acd10eb4ec0bdebd9de16cd5468.pdf
    • https://static.usrfiles.com/ugd/b8c837_cec2a0b50b054a15a341cc5fa677495b.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/fotiwowobed.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/38757486917.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/70548933662.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/68698700269.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/mulogugotupezujomu.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_off00006181.bin
4f6d9baf85d7fddc3eddcf60436811aca93ebe959ee1642842ea2cd561b96c46
pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 5228 bytes
font_01_sfnt_off00007375.bin
7292faa2729bb0c6a7cfd26401541dfe5acbc31aa042bc1185742a73b2be8607
pdf-font-stream PDF embedded font (sfnt) at offset 0x7375 10120 bytes