PDF malware analysis — malicious · a84c52c524b2baf8

MALICIOUS

PDF

39.3 KB Created: 2020-08-30 08:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3ba86e728af25c3e0d90e7f9e4a320bf SHA-1: fd5db31adb76a9ce8936bedcb209317c9ac86d5e SHA-256: a84c52c524b2baf8da3dd657847a90b65b4661a0225c346eaafb32d1391893e2

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. The presence of a 'download' button lure further supports a social engineering attack. The primary malicious URL identified is https://ttraff.cc/wix?keyword=firmware+2.70+rt6, which is likely used to deliver a secondary payload.

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.
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.cc/wix?keyword=firmware+2.70+rt6
- https://static.usrfiles.com/ugd/3f4b99_9b0604723ffe4a75a860d90dc9a11702.pdf
- https://static.usrfiles.com/ugd/b8c837_733be6816e294ab59cf03ba9757d797e.pdf
- https://static.usrfiles.com/ugd/b8c837_a67bc1f0438b4ec1a376832ac4d5cd73.pdf
- https://cdn.shopify.com/s/files/1/0433/8502/8758/files/82074064596.pdf
- https://cdn.shopify.com/s/files/1/0430/4342/2361/files/experian_freeze_credit_report_phone_number.pdf
- https://cdn.shopify.com/s/files/1/0440/5959/0806/files/lojesigutufepo.pdf
- https://cdn.shopify.com/s/files/1/0433/4488/7963/files/85093767149.pdf
- https://static.usrfiles.com/ugd/5d2cf3_4c0ba93076b24809b165d9749eeeaf83.pdf
- https://static.usrfiles.com/ugd/57c819_4f1233ec34f1445d9ac7ad2964ca40a3.pdf
- https://static.usrfiles.com/ugd/b8c837_8432177643f44956bbf81b136dba065b.pdf
- https://static.usrfiles.com/ugd/c3f88d_3ae99b9cc98d40a7baeab96036f00c82.pdf
- https://cdn.shopify.com/s/files/1/0434/0675/3948/files/widosutukiwafukovaruluf.pdf
- https://cdn.shopify.com/s/files/1/0435/1783/7472/files/servio_social_na_contemporaneidade_scielo.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_off00005c6b.bin` `971cf9eaa8e5e70d90225526464ccbf774164c64c7aea33b39f493c53939f83a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C6B	5208 bytes
`font_01_sfnt_off00006e20.bin` `8acdda2d92f317d623d99d6515bf84d75aa70bd1923b709e9e73cb342b1a939b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E20	10120 bytes

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