PDF malware analysis — malicious · d9138d4fc8c913a6

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 19:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b9092c9d1669f3fb59dc82b30a2baf4f SHA-1: a1c4715e585019c110b9dd0a6aba5a97323fa390 SHA-256: d9138d4fc8c913a6bb221f5daab1d89f26b9d37c9ea5934123a6f2cdc4562c72

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF documents, indicating a link farm for SEO manipulation. One of the primary links, 'https://ttraff.com/wix?keyword=iv+fluid+therapy+guidelines', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links, suggesting a lure to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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.
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
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=iv+fluid+therapy+guidelines
- https://static.usrfiles.com/ugd/e1d12c_98749167ecc943d983000e57153fd7e6.pdf
- https://static.usrfiles.com/ugd/299074_ff2b655d9a5e4fdab7c37f7281fc1059.pdf
- https://static.usrfiles.com/ugd/b8c837_6664b1be210a4483b4d4a3ef414dfdfb.pdf
- https://cdn.shopify.com/s/files/1/0428/8859/3567/files/wivivopuwoduwulufogof.pdf
- https://cdn.shopify.com/s/files/1/0431/7849/2072/files/52865378535.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
- https://cdn.shopify.com/s/files/1/0433/0101/1614/files/que_es_el_traumatismo_craneoenceflico.pdf
- https://static.usrfiles.com/ugd/b8c837_a2f640f340c6440aaa326855df987f29.pdf
- https://static.usrfiles.com/ugd/b8c837_dfaa338034b746f7a4c2e5beacc168d9.pdf
- https://cdn.shopify.com/s/files/1/0432/2381/0211/files/gakevifelajabibuvameseg.pdf
- https://cdn.shopify.com/s/files/1/0450/9591/1577/files/rational_function_equations_and_inequalities_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0431/4460/9943/files/7458736866.pdf
- https://cdn.shopify.com/s/files/1/0437/8863/2224/files/ketotabegesakasolebufili.pdf
- https://cdn.shopify.com/s/files/1/0431/7750/9020/files/rumukodakefubat.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006fa3.bin` `2f420d1de8bc07981c2647e395ed69235de8dcafae60c6ec7217c16261ab88c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FA3	5400 bytes
`font_01_sfnt_off0000820e.bin` `bf7f92d76d7dbe6feb749ccda1dd73cf47551ba12b4239ed11bcc153d687441d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x820E	10300 bytes

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