PDF malware analysis — malicious · 377a8f1ddf3a65e1

MALICIOUS

PDF

47.0 KB Created: 2020-08-01 05:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd95827553d777d62e35965c7f767494 SHA-1: fc5edb5390f318cf2e2bd0026a9b489053ab8149 SHA-256: 377a8f1ddf3a65e10374710afe1bb4141fda8ae4e495c9c7beaeeae9eefaa406

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text related to '2017-2018 fafsa pdf', suggesting a lure. The presence of numerous embedded links, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=2017-+2018+fafsa+pdf
- http://files.ihmcenterforliteracy.com/uploads/1/3/0/7/130739614/20a66.pdf
- http://files.peacockpastries.com/uploads/1/3/1/8/131856039/pimigefewaribe.pdf
- http://files.aspireimmigration.ca/uploads/1/3/2/7/132740905/nopixi.pdf
- http://files.lincolnfencecontractors.com/uploads/1/3/2/6/132681938/7c5f525598fb.pdf
- http://files.codywbenjamin.com/uploads/1/3/1/3/131380777/falazavuv.pdf
- https://cdn.shopify.com/s/files/1/0439/8533/8526/files/werete.pdf
- https://cdn.shopify.com/s/files/1/0429/4790/3654/files/butuxav.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/395667921.pdf
- https://cdn.shopify.com/s/files/1/0430/9064/1047/files/5566474079.pdf
- https://cdn.shopify.com/s/files/1/0431/4356/1376/files/kidotikur.pdf
- https://cdn.shopify.com/s/files/1/0430/0819/6767/files/pakib.pdf
- https://cdn.shopify.com/s/files/1/0439/8632/1566/files/dazitu.pdf
- https://cdn.shopify.com/s/files/1/0434/0531/2154/files/zutadifuf.pdf
- https://cdn.shopify.com/s/files/1/0431/3251/8555/files/migufatagewenitekanizuwi.pdf
- https://cdn.shopify.com/s/files/1/0432/6899/7283/files/5695778095.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.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_off00006d40.bin` `1c9583b055d58e2b397524c506cc7c1fac04946ad21f3e5209828e8b46f0c671`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D40	4768 bytes
`font_01_sfnt_off00007d6f.bin` `877bf1f5018aa33466778c1e0eeb6a3e03afd9c71939f57ee43031180c7468b7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D6F	10100 bytes
`font_02_sfnt_off00009fc4.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FC4	4324 bytes

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