PDF malware analysis — malicious · b1fe815a9b75ba57

MALICIOUS

PDF

45.8 KB Created: 2020-09-01 21:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a2e63616ea88bef5bf228a5cebe67964 SHA-1: fe4d316739c0de3545e6c5aad9a71377efb756c3 SHA-256: b1fe815a9b75ba577218a4b781295ea0242dcba5d3633961b707cedbbbb51839

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files, indicating a link farm for SEO manipulation or to obscure malicious destinations. One of the primary links, 'https://ttraff.com/wix?keyword=higgledy+garden+bee+meadow+guide', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to contain the same URLs found in the heuristics.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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=higgledy+garden+bee+meadow+guide
- https://static.usrfiles.com/ugd/ac72e0_33691d50ee58458da8cd5a9bead1ea81.pdf
- https://static.usrfiles.com/ugd/e4ff69_88d93a2cbb8e4452bc789e18419d5807.pdf
- https://static.usrfiles.com/ugd/67e251_71a90b283b10416fb845f94acc0009f6.pdf
- https://cdn.shopify.com/s/files/1/0438/3549/0461/files/gilepixazowaxi.pdf
- https://cdn.shopify.com/s/files/1/0435/1610/0776/files/an_astrologer_s_day_summary_download.pdf
- https://cdn.shopify.com/s/files/1/0431/4107/1016/files/brutus_aet2_password_cracker_free.pdf
- https://cdn.shopify.com/s/files/1/0436/5549/5833/files/36589394459.pdf
- https://static.usrfiles.com/ugd/18f527_e4898d1ec0ab464a80f08e398fde8ec3.pdf
- https://static.usrfiles.com/ugd/71fd01_abef332480aa4dc393979e678ed93d75.pdf
- https://static.usrfiles.com/ugd/345929_d42fb3894c6b423c9cad9dd08be5e24b.pdf
- https://cdn.shopify.com/s/files/1/0434/6304/9376/files/35338337636.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdf
- https://cdn.shopify.com/s/files/1/0437/0753/1414/files/62823699953.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7649/files/burejivuzuvitukovu.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000067cf.bin` `5e84254f97afa765b662a6bb45bee31e93f1353836dc1a42c0f49c4d3388e8ab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67CF	5064 bytes
`font_01_sfnt_off000078ec.bin` `78567d7bc283d16766804fc1c94de1e68269e3ff77e9a87bf996cf4708201b53`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78EC	10244 bytes
`font_02_sfnt_off00009c09.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C09	4324 bytes

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